Publications

2023

Guillaume Marcaud, Alex Taekyung Lee, Adam J. Hauser, F. Y. Yang, Sangjae Lee, Diego Casa, Mary Upton, Thomas Gog , Kayahan Saritas,  Yilin Wang, Mark P. M. Dean, Hua Zhou, Zhan Zhang, F. J. Walker, Ignace Jarrige, Sohrab Ismail-Beigi, and Charles Ahn, Low-energy electronic interactions in ferrimagnetic Sr2CrReO6 thin films, Phys. Rev. B. 108, 075132 (2023). https://link.aps.org/doi/10.1103/PhysRevB.108.075132

Wenzheng Wei, Dung Vu, Zhan Zhang, Frederick J. Walker, and Charles H Ahn, Superconducting Nd1−xEuxNiO2 thin films using in situ synthesis, Sci. Adv. 9, eadh3327 (2023). https://doi.org/10.1126/sciadv.adh3327

Jeong Rae Kim, Byungmin Sohn, Hyeong Jun Lee, Sangmin Lee, Eun Kyo Ko, Sungsoo Hahn, Sangjae Lee, Younsik Kim, Donghan Kim, Hong Joon Kim, Youngdo Kim, Jaeseok Son, Charles H. Ahn, Frederick J. Walker, Ara Go, Miyoung Kim, Choong H. Kim, Changyoung Kim, and Tae Won Noh, Heteroepitaxial Control of Fermi Liquid, Hund Metal, and Mott Insulator Phases in Single-Atomic-Layer Ruthenates, Adv. Mater. 2023, 2208833 (2023). https://doi.org/10.1002/adma.202208833

Kidae Shin, Stephen Eltinge, Sangjae Lee, Hyungki Shin, Juan Jiang, Hawoong Hong, Bruce A. Davidson, Ke Zou, Sohrab Ismail-Beigi, Charles H. Ahn, and Frederick J. Walker, Polarity-Driven Atomic Displacements at the 2D Mg₂TiO₄-MgO (001) Oxide Interface for Hosting Potential Interlayer Excitons, Adv. Mater. Interfaces 2023, 2202320 (2023). https://doi.org/10.1002/admi.202202320

Wenzheng Wei, Kidae Shin, Hawoong Hong, Yeongjae Shin, Arashdeep Singh Thind, Yingjie Yang, Robert F. Klie, Frederick J. Walker, and  Charles H. Ahn, Solid state reduction of nickelate thin films, Phys. Rev. Materials 7, 013802 (2023). https://doi.org/10.1103/PhysRevMaterials.7.013802

2022

Karin M. Rabe, Frederick J. Walker, Yeong Jae Shin, and Charles H. Ahn, Novel Functionality in Switchable Polar Materials, Advanced Electronic Materials, 8, 2200146 (2022). DOI: 10.1002/aelm.202200146

Claudia Lau, Nicholas G. Combs, Evguenia Karapetrova,  Juan Jiang,  Susanne Stemmer,  Charles H. Ahn, and Frederick J. Walker, Resonant x-ray scattering method for measuring cation stoichiometry in BaSnO₃ thin films, Journal of Vacuum Science & Technology A 40, 013411 (2022). DOI: 10.1116/6.0001454

2021

Carlos A. F. Vaz,  Yeong Jae Shin, Manuel Bibes,  Karin. M. Rabe, Frederick J. Walker, and  Charles. H. Ahn, Epitaxial ferroelectric interfacial devices, Applied Physics Reviews 8, 041308 (2021). DOI: 10.1063/5.0060218

Jonathan Pelliciari, Sangjae Lee, Keith Gilmore, Jiemin Li, Yanhong Gu, Andi Barbour, Ignace Jarrige, Charles H Ahn, Frederick J. Walker, Valentina Bisogni, Tuning spin excitations in magnetic films by confinement, Nature Materials 20, 188 (2021). DOI: 10.1038/s41563-020-00878-0

Fengmiao Li, Yuting Zou, Myung-Geun Han, Kateryna Foyevtsova, Hyungki Shin, Sangjae Lee, Kidae Shin, Stephen D. Albright, Ronny Stuarto, Feizhou He, Bruce A. Davidson, Frederick J. Walker, Charles H. Ahn, Yimei Zhu, Zhi Gang Cheng, Ilya Elfimov, George A. Sawatzky, Ke Zou, Single-crystalline epitaxial TiO film: A metal and supercondutor, similar to Ti metal,Science Advances 7, 2, eabd4248 (2021) DOI: 10.1126/sciadv.abd4248

2020

Yubo Qi, Sobhit Singh, Claudia Lau, Fei-Ting Huang, Xianghan Xu, Frederick J. Walker, Charles H. Ahn, Sang-Wook Cheong, and Karin M. Rabe, Stabilization of Competing Ferroelectric Phases of HfO₂ under Epitaxial Strain, Phys. Rev. Lett. 125, 257603 (2020) DOI: 10.1103/PhysRevLett.125.257603

Stephen D. Albright, Ke Zou, Claudia Lau, Stephen Eltinge, Hawoong Hong, Sohrab Ismail-Beigi, Frederick J. Walker, Charles H. Ahn, Identifying crystal structures and chemical reactions at the interface of stanene on Bi₂Te₃, J. Appl. Phys. 128, 165301 (2020) DOI: 10.1063/5.0020168

Juan Jiang, Sangjae Lee, Fucong Fei, Fengqi Song, Elio Vescovo, Konstantine Kaznatcheev, Frederick J. Walker, Charles H. Ahn, A comprehensive ARPES study of the type-II Dirac semimetal candidate Ir_1-xPt_xTe₂, APL Mater. 8, 061106 (2020) DOI: 10.1063/5.0011549

Rui Peng, Ke Zou, M. G. Han, Stephen D. Albright, Hawoong Hong, Claudia Lau, H. C. Xu, Yimei Zhu, Frederick J. Walker, Charles H. Ahn, Picoscale structural insight into superconductivity of monolayer FeSe/SrTiO₃, Sci. Adv. 6, eaay4517 (2020) DOI: 10.1126/sciadv.aay4517

Ankit S. Disa, Frederick J. Walker, and Charles H. Ahn, High-Resolution Crystal Truncation Rod Scattering: Application to Ultrathin Layers and Buried Interfaces, Adv. Mat. Interfaces 7, 1901772 (2020) DOI: 10.1002/admi.201901772

2019

Yeong Jae Shin, Claudia Lau, Sangjae Lee, Frederick J. Walker, and Charles H. Ahn, Surface-induced thickness limit of conducting La-doped SrTiO₃ thin films, Appl. Phys. Lett. 115, 161601 (2019) DOI: 10.1063/1.5111771

Sangjae Lee, Alex Taekyung Lee, Alexandru B. Georgescu, Gilberto Fabbris, Myung-Geun Han, Yimei Zhu, John W. Freeland, Ankit S. Disa, Yichen Jia, Mark P. M. Dean, Frederick J. Walker, Sohrab Ismail-Beigi, and Charles H. Ahn, Strong Orbital Polarization in a Cobaltate-Titanate Oxide Heterostructure, Phys. Rev. Lett. 123, 117201 (2019). DOI: 10.1103/PhysRevLett.123.117201

Q. Y. Chen, X. B. Luo, E. Vescovo, K. Kaznatcheev, F. J. Walker, C. H. Ahn, Z. F. Ding, Z. H. Zhu, L. Shu, Y. B. Huang, and J. Jiang, Electronic structure study of LaCoIn₅ and its comparison with CeCoIn₅, Physical Review B 100, 035117 (2019). DOI: 10.1103/PhysRevB.100.035117

Claudia Lau, Youjung Kim, Stephen Albright, Kookrin Char, C. H. Ahn, and F. J. Walker, Structural characterization of the LaInO₃/BaSnO₃ interface via synchrotron scattering, APL Materials 7, 031108 (2019). DOI: 0.1063/1.5084058

Ke Zou, Stephen D. Albright, Omur E. Dagdeviren, M. D. Morales-Acosta, Georg H. Simon, Chao Zhou, Subhasish Mandal, Sohrab Ismail-Beigi, Udo D. Schwarz, Eric I. Altman, Frederick J. Walker, and Charles H. Ahn, Revealing surface-state transport in ultrathin topological crystalline insulator SnTe films. APL Mater. 7, 051106 (2019); DOI: 10.1063/1.5096279 (Editors pick)

Seung Han Lee, Guo Tian, Tae Cheol Kim, Hyun Kyu Jung, Jun Woo Choi, Frederick J Walker, Charles H Ahn, Caroline A Ross, and Dong Hun Kim, Integration of sputter-deposited multiferroic CoFe₂O₄-BiFeO₃ nanocomposites on conductive La_0.7Sr_0.3MnO₃ electrodes. Nanotechnology 30, 105601, 2019. DOI:10.1088/1361-6528/aaf7cd

2018

Eric N. Jin, Arvin Kakekhani, Sohrab Ismail-Beigi, Charles H. Ahn, and Frederick J. Walker, Two-dimensional electron gas oxide remote doping of Si(001). Physical Review Materials 2, 115001, 2018. DOI: 10.1103/PhysRevMaterials.2.115001

Omur E. Dagdeviren, Subhasish Mandal, Ke Zou, Chao Zhou, Georg H. Simon, Frederick J. Walker, Charles H. Ahn, Udo D. Schwarz, Sohrab Ismail-Beigi, and Eric I. Altman, Suppression of the spectral weight of topological surface states on the nanoscale via local symmetry breaking. Physical Review Materials 2, 114205, 2018. DOI: 10.1103/PhysRevMaterials.2.114205

Tae Cheol Kim,  Shuchi Ojha,  Guo Tian,  Seung Han Lee,  Hyun Kyu Jung,  Jun Woo Choi,  Lior Kornblum,  Frederick J. Walker,  Charles H. Ahn,  Caroline A. Ross,  and  Dong Hun Kim, Self-assembled multiferroic epitaxial BiFeO₃–CoFe₂O₄ nanocomposite thin films grown by RF magnetron sputtering. Journal of Materials Chemistry C 6, 5552-5561, 2018.  DOI: 10.1039/C8TC01192C

L. Kornblum, J. Faucher, M. D. Morales-Acosta, M. L. Lee, C. H. Ahn, and F. J. Walker, Oxide heterostructures for high density 2D electron gases on GaAs. Journal of Applied Physics 123, 025302, 2018. DOI: 10.1063/1.5004576

Andrei Malashevich, Matthew S. J. Marshall, Cristina Visani, Ankit S. Disa, Haichao Xu, Frederick J. Walker, Charles H. Ahn, and Sohrab Ismail-Beigi, Controlling Mobility in Perovskite Oxides by Ferroelectric Modulation of Atomic-Scale Interface Structure. Nano Letters 18 (1), 573-578, 2018. DOI: 10.1021/acs.nanolett.7b04715

Mehmet Dogan, Stéphanie Fernandez-Peña, Lior Kornblum, Yichen Jia, Divine P. Kumah, James W. Reiner, Zoran Krivokapic, Alexie M. Kolpak, Sohrab Ismail-Beigi, Charles H. Ahn, and Frederick J. Walker, Single Atomic Layer Ferroelectric on Silicon. Nano Letters 18, 241-246, 2018.  DOI: 10.1021/acs.nanolett.7b03988

2017

S. Ismail-Beigi, F. J. Walker, A. S. Disa, K. Rabe, & C. H. Ahn, Picoscale materials engineering. Nature Reviews Materials 2, 17060, 2017. DOI:10.1038/natrevmats.2017.60

M-G. Han, J. Garlow, M. Marshall, A.Tiano, S. Wong, S-W Cheong, F. J. Walker, C. H. Ahn, Y. Zhu, Electron-beam-induced-current and active secondary-electron voltage-contrast with aberration-corrected electron probes. Ultramicroscopy 177, 14, 2017. DOI: 10.1016/j.ultramic.2017.03.028

D. Roy, S. Davidovitch, Y-M. Hung, M. Schultz, S. Albright, M. Morales-Acosta, F. J. Walker, J. Reiner, C. H. Ahn, Andrew. Kent, and L. Klein. Field tuning of domain-wall type and chirality in SrRuO₃. Physical Review B 95 (22), 224437, 2017. DOI: 10.1103/PhysRevB.95.224437

G. Fabbris, D. Meyers, J. Okamoto, J. Pelliciari, A. S. Disa, Y. Huang, Z.-Y. Chen, W. B. Wu, C. T. Chen, S. Ismail-Beigi, C. H. Ahn, F. J. Walker, D. J. Huang, T. Schmitt, and M. P. M. Dean, Orbital Engineering in Nickelate Heterostructures Driven by Anisotropic Oxygen Hybridization rather than Orbital Energy Levels. Physical Review Letters,  117 (14), 147401, 2016. DOI: 10.1103/PhysRevLett.117.147401.

M-G Han, J. Garlow, M. Bugnet, S. Divilov, M. Marshall, L. Wu, M. Dawber, M. Fernandez-Serra, G. Botton, S-W. Cheong, F. J. Walker, C. H. Ahn, and Y. Zhu, Coupling of bias-induced crystallographic shear planes with charged domain walls in ferroelectric oxide thin films. Physical Review B 94 (10), 100101(R), 2016. DOI: 10.1103/PhysRevB.94.100101

E. N. Jin, L. Kornblum, C. H. Ahn, and F. J. Walker, Integrating 2D electron gas oxide heterostructures on silicon using rare-earth titanates. MRS Advances, 1 (4), 287, 2016. DOI: 10.1557/adv.2016.95

K. Zou, S. Mandal, S. Albright, R. Peng, Y. Pu, D. P. Kumah, C. Lau, G. Simon, O. Dagdeviren, X. He, I. Božović, U. Schwarz, E. I. Altman, D. Feng, F. J. Walker, S. Ismail-Beigi, and C. H. Ahn, Role of double TiO₂ layers at the interface of FeSe/SrTiO₃ superconductors. Physical Review B 93, 180506(R), 2016. DOI: 10.1103/PhysRevB.93.180506

O. Dagdeviren, G. Simon, K. Zou, F. J. Walker, C. H. Ahn, E. I. Altman, and U. Schwarz, Surface Phase, Morphology, and Charge Distribution Transitions on Vacuum and Ambient Annealed SrTiO₃(100). Physical Review B 93, 195303, 2016. DOI: 10.1103/PhysRevB.93.195303

D.  P.  Kumah, M. Dogan, J. Ngai, D. Qiu, Z. Zhang, D. Su, E. D. Specht, S. Ismail-Beigi, C.  Ahn, and F. Walker. Engineered Unique Elastic Modes at a BaTiO₃/(2×1)−Ge(001) Interface. Physical Review Letters 116, 106101, 2016. DOI: 10.1103/PhysRevLett.116.106101

Z. Wang, D. Morales-Acosta, S. Li, W. Liu, T. kanai, Y. Liu,Y-N. Chen, F. J. Walker, C. H. Ahn, R. Leblanc and   E. Yan.  A Narrow Amide I Vibrational Band Observed by Sum Frequency Generation Spectroscopy Reveals Highly Ordered Structures of a Biofilm Protein at the Air/Water Interface. Chemical Communications 52, 2956, 2016. DOI: 10.1039/C5CC05743D

2015

K. Zou, S. Ismail-Beigi, K. Kisslinger, X. Shen, D. Su, F. J. Walker, and C. H. Ahn, LaTiO₃/KTaO₃ interfaces: A new two-dimensional electron gas system. APL Materials 3, 036104, 2015. DOI: 10.1063/1.4914310

X. Zhu, M. D. Morales-Acosta, J. Shen, F. J. Walker, J. Cha, and E.  Altman, The Growth, structure, and electronic properties of nonpolar thin films on a polar substrate: Cr₂O₃ on ZnO (0001) and ZnO (000-1). Physical Review B 92, 165414, 2015. DOI: 10.1103/PhysRevB.92.165414

L. Kornblum, D. Morales-Acosta, E. N. Jin, C. H. Ahn, and F. J. Walker, Transport at the Epitaxial Interface between Germanium and Functional Oxides. Advanced Materials Interfaces 2, 1500193, 2015. DOI: 10.1002/admi.201500193

L. Kornblum, E. N. Jin, O. Shoron, M. Boucherit, S. Rajan, C. H. Ahn, and F. J. Walker, Electronic transport of titanate heterostructures and their potential as channels on (001) Si. Journal Applied Physics 118, 105301, 2015. DOI: 10.1063/1.4930140

M. Herdiech, X. Zhu, D. Morales-Acosta, F. J. Walker and E. I. Altman. The modification of ferroelectric LiNbO₃(0001) surfaces using chromium oxide thin films. Physical Chemistry Chemical Physics, 14 (17), 9488, 2015. DOI: 10.1039/C4CP05875E

C. A. F Vaz, F. J. Walker, C. H. Ahn, and S. Ismail-Beigi, Intrinsic interfacial phenomena in manganite heterostructures. Journal of Physics: Condensed Matter 27, 123001, 2015. DOI: 10.1088/0953-8984/27/12/123001

A. S. Disa, D. P. Kumah, A. Malashevich, H. Chen, D. Arena, E. D. Specht, S. Ismail-Beigi, F. J. Walker, and C. H. Ahn, Orbital engineering in symmetry-breaking polar heterostructures. Physical Review Letters 114, 026801, 2015. DOI:10.1103/PhysRevLetters114.026801

A. S. Disa, F. J. Walker, S. Ismail-Beigi, and C. H. Ahn. Research Update: Orbital polarization in LaNiO₃-based heterostructures.  APL Materials 3, 062303, 2015. DOI: 10.1063/1.4921456

S. Ismail-Beigi, F. J. Walker, SW. Cheong, KM. Rabe, and C. H. Ahn, Alkaline earth stannates: The next silicon? APL Materials, 3, 062510, 2015. DOI: 10.1063/1.4921338

L. Kornblum, E. N. Jin, D. P. Kumah, A. T. Ernst, C. C. Broadbridge, C. H. Ahn, and Fred J. Walker, Oxide 2D electron gases as a route for high carrier densities on (001) Si. Applied Physics Letters 106, 201602, 2015. DOI: 10.1063/1.4921437

K. Galatsis, C. H. Ahn, I. Krivorotov, P. Kim, R. Lake, K. Wang, J. Chang, A Material Framework for Beyond CMOS Devices. IEEE Journal on Exploratory Sold-State Computational Devices and Circuits 1, 27, 2015. DOI: 10.1109/JXCDC.2015.2424832

M-G Han, M.  S. J. Marshall, L. Wu, F. J. Walker, C. H. Ahn, and Y. Zhu, In Situ Electron Holography of Ferroelectric Thin Films. Microscopy and Microanalysis 21, S3, 1401, 2015. DOI: 10.1017/S1431927615007783

2014

W.H.P. Pernice, C. Xiong, F. J. Walker and H.X. Tang, Design of a silicon integrated electro-optic modulator using ferroelectric BaTiO₃ thin films. IEEE Photonics Technology Letters 99, 1, 2014. DOI: 10.1109/LPT.2014.2322501

D. P. Kumah, A. S. Disa, J. H. Ngai, H. Chen, A. Malashevich, J. W. Reiner, S. Ismail-Beigi, F. J. Walker and C. H. Ahn, Tuning the structure of nickelates to achieve two-dimensional electron conduction. Advanced Materials 26 (12), 1935, 2014. DOI: 10.1002/adma.201304256, (2014).

J. H. Ngai, D. P. Kumah, C. H. Ahn and F. J. Walker, Hysteretic electrical transport in BaTiO₃/Ba_1-xSr_xTiO₃/Ge heterostructures. Applied Physics Letters 104 (6), 062905, 2014. DOI: 10.1063/1.4864648

C. Xiong, W. Pernice, J. Ngai, J. Reiner, D. Kumarh, F. J. Walker, C. H. Ahn and H. Tang, Active silicon integrated nanophotonics: ferroelectric BaTiO₃ devices. Nano Letters 14 (3), 1419, 2014. DOI: 10.1021/nl404513p

J. Ngai, F. J. Walker and C. H. Ahn, Correlated Oxide Physics and Electronics. Annual Review of Materials Research 44 (1), 2014. DOI: 10.1146/annurev-matsci-070813-113248

Shen, Y. Jung, A. S. Disa, F. J. Walker, C. H. Ahn, and J. J. Cha, Synthesis of SnTe Nanoplates with {100} and {111} Surfaces. Nano Letters 14 (7), 4183, 2014. DOI: 10.1021/nl501953s

C. A. F. Vaz, J. A. Moyer, D. A. Arena, C. H. Ahn, and V. E. Henrich, Magnetic and electronic structure of ultrathin La_1−xSr_xMnO₃ films at half doping. Physical Review B 90, 024414, 2014. DOI: 10.1103/PhysRevB.90.024414

D.H. Kim, N.M. Aimon, X.Y. Sun, L. Kornblum, F.J. Walker, C.H. Ahn and C.A. Ross, Integration of Self-Assembled Epitaxial BiFeO₃-CoFe₂O₄ Multiferroic Nanocomposites on Silicon Substrates. Advanced Functional Materials 24 (37), 2014. DOI: 10.1002/adfm.201401458

H. Chen, Q. Qiao, M. Marshall, A. Georgescu, A. Gulec, P. Phillips, R. Klie, F. J. Walker, C. H. Ahn, and S. Ismail-Beigi, Reversible Modulation of Orbital Occupations via an Interface-Induced Polar State in Metallic Manganites. Nano Letters 14 (9), 4965, 2014. DOI: 10.1021/nl501209p

MG Han, M. Marshall, L. Wu, M. Schofield, T. Aoki, R. Twesten, J. Hoffman, F. J. Walker, C. H. Ahn, and Y. Zhu, Interface-induced nonswitchable domains in ferroelectric thin films. Nature Communications 5, 4693, 2014. DOI: 10.1038/ncomms5693

M. Marshall, A. Malashevich, A. S. Disa, MG. Han, H. Chen, Y. Zhu, S. Ismail-Beigi, F. J. Walker, and C. H. Ahn, Conduction at a Ferroelectric Interface. Physical Review Applied 2, 051001, 2014. DOI: 10.1103/PhysRevApplied.2.051001

D. P. Kumah, A. Malashevich, A. S. Disa, D. Arena, F. J. Walker, S. Ismail-Beigi, and C. H. Ahn, Effect of Surface Termination on the Electronic Properties of LaNiO₃ Films. Physical Review Applied 2, 054004, 2014. DOI: 10.1103/PhysRevApplied.2.054004

E. N. Jin, L. Kornblum, D. P. Kumah, K. Zou, C. Broadbridge, J. Ngai, C. H. Ahn and F. J. Walker, A high density two-dimensional electron gas in an oxide heterostructure on Si (001). APL Materials 2, 116109, 2014. DOI: 10.1063/1.4902433

J. Ngai, F. J. Walker and C. H. Ahn, Correlated Oxide Physics and Electronics. Annual Review of Materials Research 44, 1, 2014. DOI: 10.1146/annurev-matsci-070813-113248

Ivan Bozovic and Charles Ahn, A new frontier for superconductivity, Nature Physics 10, 892, 2014. DOI: 10.1038/nphys3177

N. Naftalis, N. Haham, J. Hoffman, M. S. J. Marshall, C. H. Ahn and L. Klein, Out of plane anisotropic magnetoresistance and planar Hall effect in epitaxial film of La_0.8Sr_0.2MnO₃. Journal of Applied Physics 115, 053709, 2014. DOI: 10.1063/1.4863854

2013

A. S. Disa, D. P. Kumah, J. H. Ngai, E. D. Specht, D. A. Arena, F. J. Walker, and C. H. Ahn, Phase diagram of compressively strained nickelate thin films. APL Materials 1 (3), 032110, 2013. DOI:10.1063/1.4820431

H. Chen, D. P. Kumah, A. S. Disa, F. J. Walker, C. H. Ahn, and S. Ismail-Beigi, Modifying the Electronic Orbitals of Nickelate Heterostructures via Structural Distortions. Physical Review Letters 110 (18), 186402, 2013. DOI: 10.1103/PhysRevLett.110.186402

N. Naftalis, Y. Shperber, J. A. Moyer, C. H. Ahn, and L. Klein, Thickness dependence of the resistivity tensor in epitaxial magnetite thin films. Journal of Applied Physics 114 (4), 043701, 2013. DOI: 10.1063/1.4816399

2012

N. Naftalis, N. Haham, J. Hoffman, M. S. Marshall, C. H. Ahn, and L. Klein, Angular dependence of the Hall effect of La_0.8Sr_0.2MnO₃ films. Physical Review B 86 (18), 184402, 2012. DOI: 10.1103/PhysRevB.86.184402

J. R. Kirtley, B. Kalisky, J. A. Bert, C. Bell, M. Kim, Y. Hikita, H. Y. Hwang,  J. H. Ngai, Y. Segal, F. J. Walker, C. H. Ahn, and K. A. Moler. Scanning SQUID susceptometry of a paramagnetic superconductor. Physical Review B, 85 (22): 224518, 2012. DOI: 10.1103/PhysRevB.85.224518

X. Hong, K. Zou, A. M. DaSilva, C. H. Ahn, and J. Zhu, Integrating functional oxides with graphene. Solid State Communications, 152 (15), 1365, 2012. DOI: 10.1016/j.ssc.2012.04.050

M. S. Marshall, D. P. Kumah, J. W. Reiner, A. P. Baddorf, C. H. Ahn, and F. J. Walker, Piezoelectric force microscopy of crystalline oxide-semiconductor heterostructures. Applied Physics Letters 101 (10), 102902, 2012. DOI: 10.1063/1.4750243

A. Sambri, D. Isarakorn, A. Torres-Pardo, S. Gariglio, Pattanaphong Janphuang, D. Briand, O. Stephan, J. W. Reiner,J.-M. Triscone, N. F. de Rooij, and C. H. Ahn. Epitaxial Piezoelectric Pb(Zr_0.2Ti_0.8)O₃ Thin Films on Silicon for Energy Harvesting Devices.  Smart Materials Research, 426048, 2012. DOI: 10.11552012/426048

P. Paruch, A. B. Kolton, X. Hong, C. H. Ahn, and T. Giamarchi, Thermal quench effects on ferroelectric domain walls. Physical Review B 85 (21), 214115, 2012. DOI: 10.1103/PhysRevB.85.214115

2011

C. A. F. Vaz, J. Hoffman, Y. Segal, J. W. Reiner, R. D. Grober, Z. Zhang, C. H. Ahn, F. J. Walker, Origin of the magnetoelectric effect in Pb(Zr_0.2Ti_0.8)O₃/La_0.8Sr_0.2MnO₃  multiferroic heterostructures. Physical Review Letters 104, 127202, 2010.  DOI: 10.1103/PhysRevLett.104.127202

D. Isarakorn, A. Sabri, P. Janphuang, D. Briand, S. Gariglio, J.-M. Triscone, F. Guy, J. W. Reiner, C. H. Ahn, and N. F. de Rooij, Epitaxial piezoelectric MEMS on silicon. Journal of Micromechanics and Microengineering 20, 055008, 2010. DOI: 10.1088/0960-1317/20/5/055008

D. Su, B. Yang, N. Jiang, M. Sawicki, C. Broadbridge, M. Couillard, J. W. Reiner, F. J. Walker, C. H. Ahn, and Y. Zhu, Valence electron energy-loss spectroscopy of ultrathin SrTiO₃ films grown on silicon (001) single crystal. Applied Physics Letters 96, 121914, 2010. DOI: 10.1063/1.3364144

Y. Segal, J. W. Reiner, Z. Zhang, C. H. Ahn, and F. J. Walker, The morphology of epitaxial SrTiO₃/Si (001) determined using 3D diffraction profile analysis. Journal of Vacuum Science and Technology B 28, C5B1, 2010. DOI: 10.1116/1.3420394

C. A. F. Vaz, J. Hoffman, C. H. Ahn, and R. Ramesh, Magnetoelectric coupling effects in multiferroic complex oxide composite structures. Advanced Materials 22, 2900, 2010. DOI: 10.1002/adma.200904326

K. F. Garrity, M. Padmore, Y. Segal, J. W. Reiner, F. J. Walker, C. H. Ahn, and S. Ismail-Beigi, Phase transition of Sr on Si (001): first-principles prediction and experiment. Surface Science 604, 857, 2010. DOI: 10.1016/j.susc.2010.02.011

J. H. Ngai, T. C. Schwendemann, A. E. Walker, Y. Segal, F. J. Walker, E. I. Altman, and C. H. Ahn, Achieving A-site termination on La_0.18Sr_0.82Al_0.59Ta_0.41O₃ substrates. Advanced Materials 22 (26-27), 2945, 2010. DOI: 10.1002/adma.200904328J.

Hoffman, X. Pan, J. W. Reiner, F. J. Walker, J. P. Han, C. H. Ahn, and T. P. Ma, Ferroelectric field effect transistors for memory applications. Advanced Materials 22 (26-27), 2919, 2010. DOI: 10.1002/adma.200904327

Ø. Nordseth, C. You, E. Folven, S. Gariglio, A. Sambri, J. M Triscone, J. W. Reiner, C. H. Ahn, T.  Tybell, and J. K. Grepstad, Growth and characterization of (Pb,La)(Zr,Ti)O₃ thin film epilayers on SrTiO₃-buffered Si(001). Thin Solid Films 518 (19), 5471, 2010. DOI: 10.1016/j.tsf.2010.04.023

J. W. Reiner, A. M. Kolpak, Y. Segal, K. F. Garrity, S. Ismail-Beigi, C. H. Ahn, and F. J. Walker, Crystalline oxides on silicon. Advanced Materials 22 (26-27), 2919, 2010. DOI: 10.1002/adma.200904306

J.H. Ngai, Y. Segal, D. Su, Y. Zhu, F.J. Walker, S. Ismail-Beigi, K. Le Hur, and C.H. Ahn, Electric field tuned crossover from classical to weakly localized quantum transport in electron doped SrTiO₃. Physical Review B 81, 241307 (R), 2010. DOI: 10.1103/PhysRevB.81.241307

J. W. Reiner, S. Cui, Z. Liu, M. Wang, C. H. Ahn, and T. P. Ma, Inelastic electron tunneling spectroscopy study of thin gate dielectrics. Advanced Materials 22 (26-27), 2962, 2010. DOI: 10.1002/adma.200904311

L. Klein, C. Dubourdieu, M. M. Frank, V. Narayanan, S. Guha, J. Hoffman, J. W. Reiner, and C. H. Ahn, Domain dynamics in PZT films studied by piezoelectric force microscopy. Journal of Vacuum Science and Technology B 28, C5A20, 2010. DOI: 10.1116/1.3442802

C. A. F. Vaz, J. Hoffman, Y. Segal, F. J. Walker, and C. H. Ahn. Electrostatic control of magnetism in all-oxide multiferroic heterostructures. Proc. of SPIE, 7760:776013, 2010. DOI: 10.1117/12.861070

C. A. F. Vaz, Y. Segal, J. Hoffman, R. D. Grober, F. J. Walker, and C. H. Ahn. Temperature dependence of the magnetoelectric effect in Pb(Zr_0.2Ti_0.8)O₃/La_0.8Sr_0.2MnO₃ multiferroic heterostructures. Applied Physics Letters 97, 042506, 2010. DOI: 10.1063/1.3472259

C. A. F. Vaz, Y. Segal, J. Hoffman, F. J. Walker, and C. H. Ahn. Growth and characterization of PZT/LSMO multiferroic heterostructures. Journal of Vacuum Science & Technology B 28, C5A6, 2010. DOI: 10.1116/1.3427140

A. M. Kolpak, F. J. Walker, J. W. Reiner, Y. Segal, D. Su, M. S. Sawicki, C. C. Braodbridge, Z. Zhang, Y. Zhu, and C. H. Ahn, and S. Ismail-Beigi, Interface-induced polarization and inhibition of ferroelectricity in epitaxial SrTiO₃/Si. Physical Review Letters 105, 217601, 2010. DOI: 10.1103/PhysRevLett.105.21760.  (Editor’s highlight).

D.P. Kumah, J.W. Reiner, Y. Segal, A.M. Kolpak, Z. Zhang, D. Su, Y. Zhu, M.S. Sawicki, C.C. Broadbridge, C.H. Ahn, and F.J. Walker, The atomic structure and polarization of strained SrTiO₃/Si. Applied Physics Letters 97, 251902, 2010. DOI: 10.1063/1.3529460

D. Isarakorn, D. Briand, P. Janphuang, A. Sambri, S. Gariglio, J. -M. Triscone, F. Guy, J. W. Reiner, C. H. Ahn, and N. F. de Rooij, Energy harvesting MEMS device based on an epitaxial PZT thin film: fabrication and characterization. Proceedings of the Power MEMS 2010 Conference, pp. 203-206 Leuven, 2010

2009

J.W. Reiner, F.J. Walker, C.H. Ahn, Atomically Engineered Oxide Interfaces. Science 323 (5917), 1018, 2009. DOI: 10.1126/science.1169058

Y. Segal, J.W. Reiner, A.M. Kolpak, Z. Zhang, S. Ismail-Biegi, C.H. Ahn, and F.J. Walker, Atomic structure of the epitaxial BaO/Si(001) interface. Physical Review Letters, 102 (11), 11610, 2009. DOI: 10.1103/PhysRevLett.102.116101

X. Hong, A. Posadas, K. Zou, C.H. Ahn, and J. Zhu, High-Mobility Few-Layer Graphene Field Effect Transistors Fabricated on Epitaxial Ferroelectric Gate Oxides. Physical Review Letters 102, 136808, 2009. DOI: 10.1103/PhysRevLett.102.136808

H. J. A. Molegraaf, J. Hoffman,  C. A. F. Vaz, S. Gariglio, D. van der Marel, C. H. Ahn, and J.-M. Triscone, Magnetoelectric effects in complex oxides with competing ground states. Advanced Materials 21 (34), 3470, 2009. DOI: 10.1002/adma.200900278

C. A. F. Vaz, V. E. Henrich, C. H. Ahn, and E. I. Altman, Growth and characterization of thin epitaxial Co₃O₄(111) films. Journal of Crystal Growth 311 (9), 2648, 2009. DOI:10.1016/j.jcrysgro.2009.03.006

C. A. F. Vaz, C. H. Ahn, and V. E. Henrich. Spin-polarisation effects in oxide materials. In A. Hirohata and Y. Otani, editors. Epitaxial ferromagnetic films and spintronic applications, p.145-185. Research Signpost, 2009. ISBN 978-81-308-0319-7

C. A. F. Vaz, H. Wang, C. H. Ahn, V. E. Henrich, M. Z. Baykara, T. Schwendemann, N. Pilet, B. J. Albers, U. D. Schwarz, L. H. Zhang, and Y. Zhu, J. Wang, E. I. Altman, Interface and electronic characterization of thin epitaxial Co₃O₄ films. Surface Science 603 (2): 291, 2009. DOI: 10.1016/j.susc.2008.11.022

E. Iyyamperumal, F.  Fang, A. Posadas, C. H. Ahn, R. Klie, Y. Zhao,  G. Haller and L. Pfefferle, Synthesis of Uniform Diameter Boron-Based Nanostructures Using a Mesoporous Mg−Al₂O₃ Template and Tests for Superconductivity. Journal of Physics Chemistry C 113 (41), 17661, 2009. DOI: 10.1021/jp904304t

C.A. F. Vaz, J. Hoffman, A.-B. Posadas, C. H. Ahn, Magnetic anisotropy Modulation of magnetite in Fe₃O₄/BaTiO₃(100) epitaxial structures. Applied Physics Letters 94, 022504, 2009. DOI: 10.1063/1.3069280

Y. Bason, J. Hoffman, C.H. Ahn, L. Klein, Magnetoresistance tensor of La_0.8Sr_0.2MnO₃. Physical Review B 79 (9), 092406, 2009. DOI: 10.1103/PhysRevB.79.092406

J. W. Reiner, Y. Segal, K. F. Garrity, H. Hong, S. Ismail-Beigi, C. H. Ahn, and F. J. Walker, Diffraction studies of submonolayer Sr structures on the Si (001) surface. Journal of Vacuum Science & Technology B 27, 2015, 2009. DOI: 10.1116/1.3139866
 

J. W. Reiner, A. Posadas, M. Wang, M. Sidorov, Z. Krivokapic, F. J. Walker, T. P. Ma, and C. H. Ahn, Electrical properties and interfacial structure of epitaxial LaAlO₃ on Si (001). Journal of Applied Physics 105, 124501, 2009. DOI: 10.1063/1.3148243

N. Naftalis, Y. Bason, J. Hoffman, X. Hong, and C. H. Ahn, and L. Klein, Anisotropic magnetoresistance and planar Hall effect in epitaxial films of La_0.7Ca_0.3MnO₃. Journal of Applied Physics 106, 023916, 2009. DOI: 10.1063/1.3176934

Y. Segal, J.H. Ngai, J.W. Reiner, F.J. Walker, and C.H. Ahn, X-ray photoemission studies of the metal-insulator transition in LaAlO₃/SrTiO₃ structures grown by molecular beam epitaxy. Physical Review B 80, 241107(R), 2009. DOI: 10.1103/PhysRevB.80.241107 (Editor’s highlight)

2008

J.-B. Yau, X. Hong, A. Posadas, C.H. Ahn, W. Gao, E. I. Altman, Y. Bason, L. Klein, M. Sidorov, and Z. Krivokapic, Anisotropic magnetoresistance in colossal magnetoresistive La_1-xSr_xMnO₃ thin films. Journal of Applied Physics 102, 103901, 2007. DOI: 10.1063/1.2811919

K. M. Rabe, C.H. Ahn, and J.-M. Triscone, Physics of Ferroelectrics: A Modern Perspective, eds. (Springer-Verlag, Heidelberg, 2007).

Y. Bason, L. Klein, H. Wang, J.D. Hoffman, X. Hong, V. Henrich, and C.H. Ahn, Planar Hall effect in epitaxial thin films of magnetite.  Journal of Applied Physics 101, 09J507, 2007. DOI: 10.1063/1.2712053.

C. Lichtensteiger, M. Dawber, N. Stucki, J.-M. Triscone, J. Hoffman, J.-B. Yau, C.H. Ahn, L. Despont, P. Aebi, Monodomain to polydomain transition in ferroelectric PbTiO₃ thin films with La_0.67Sr_0.33MnO₃ electrodes. Applied Physics Letters 90, 052907, 2007. DOI: 10.1063/1.2433757

K.M. Rabe, M. Dawber, C. Lichtensteiger, C.H. Ahn, and J.-M. Triscone, Modern Physics of Ferroelectrics: Essential Background, Physics of Ferroelectrics: A Modern Perspective. K.M. Rabe, C.H. Ahn, and J.-M. Triscone, eds. (Springer-Verlag, Heidelberg, 2007), pp. 1-30. DOI: 10.1007/978-3-540-34591-6_1

A. Posadas, M. Lippmaa, F.J. Walker, M. Dawber, C.H. Ahn, and J.-M. Triscone, Growth and Novel Applications of Epitaxial Oxide Thin Films, Physics of Ferroelectrics: A Modern Perspective, K.M. Rabe, C.H. Ahn, and J.-M. Triscone, eds. (Springer-Verlag, Heidelberg, 2007), pp. 219-304. DOI: 10.1007/978-3-540-34591-6_6

2006

T.C. Kaspar, T. Droubay, V. Shutthanandan, S.M. Heald, C.M. Wang, D.E. McCready, S. Thevuthasan, J.D. Bryan, D.R. Gamelin, A.J. Kellock, M.F. Toney, X. Hong, C.H. Ahn, and S.A. Chambers, Ferromagnetism and structure of epitaxial Cr-doped anatase TiO₂ thin films. Physical Review B 73 (15), 155327, 2006. DOI: 10.1103/PhysRevB.73.155327

Y. Bason, L. Klein, J.-B. Yau, X. Hong, J. Hoffman, and C.H. Ahn, Planar Hall Effect magnetic random access memory. Journal of Applied Physics 99, 08R701, 2006. DOI: 10.1063/1.2162824

A. Posadas, J.-B. Yau, C.H. Ahn, Epitaxial multiferroic hexagonal manganite thin films grown on ZnO. Physica Status Solidi b 243 (9), 2085, 2006. DOI: 10.1002/pssb.200666820

X. Hong, J.-B. Yau, J.D. Hoffman, C.H. Ahn, Y. Bason, L. Klein, The effect of electric field effect doping on the anisotropic magnetoresistance in doped manganites. Physical Review B 74 (17), 174406, 2006. DOI: 10.1103/PhysRevB.74.174406

C.H. Ahn, A. Bhattacharya, M. Di Ventra, J.N. Eckstein, C. Daniel Frisbie, M.E. Gershenson, A.M. Goldman, I.H. Inoue, J. Mannhart, Andrew J. Millis, Alberto F. Morpurgo, Douglas Natelson, and  Jean-Marc Triscone, Electrostatic Modification of Novel Materials. Reviews of Modern Physics 78 (4), 1185, 2006. DOI: 10.1103/RevModPhys.78.1185

2005

M. Li, A. Posadas, C.H. Ahn, and E.I. Altman, Scanning tunneling microscopy study of terminal oxygen structures on WO₃ (100) thin films. Surf. Sci, 579(2-3), 175, 2005. DOI:10.1016/j.susc.2005.02.007

X. Hong, A. Posadas, and C. H. Ahn, Examining the screening limit of field effect devices via the metal-insulator transition. Applied Physics Letters 86, 142501, 2005. DOI: 10.1063/1.1897076

A. Posadas, J.-B. Yau, C.H. Ahn, J. Han, S. Gariglio, K. Johnston, K.M. Rabe, and J.B. Neaton, Epitaxial growth of multiferroic YMnO₃ on GaN. Applied Physics Letters 87, 171915 2005. DOI: 10.1063/1.2120903

2004

M. Li, E.I. Altman, A. Posadas, and C.H. Ahn, Surface phase transitions upon reduction of epitaxial WO₃ (100) thin films. Thin Solid Films 446, 238, 2004.  DOI:10.1016/j.tsf.2003.10.002

M. Li, E.I. Altman, A. Posadas, and C.H. Ahn, Surface phase transitions and related surface defect structures upon reduction of epitaxial WO₃ (100) thin films: a STM study. Journal of Vacuum Science Technology A 22, 1682, 2004. DOI:10.1116/1.1756880

M. Li, W. Gao, A. Posadas, C.H. Ahn, and E.I. Altman, Reactivity of 1-propanol on p(nx2) reconstructed WO₃ (100) thin films. Journal of Physical Chemistry B 108, 15259, 2004. DOI: 10.1021/jp047383y

A. Demuer, D. Jaccard, J.W. Reiner, C.H. Ahn, and J.-M. Triscone, Magnetism of SrRuO₃ thin films under hydrostatic pressure.  Annalen der Physik (Leipzig) 13, 72, 2004.  DOI: 10.1002/andp.200310052

X. Hong, F. Xiao, J. W. Reiner, A. Posadas, and C.H. Ahn, Growth and characterization of La_0.8Sr_0.2MnO₃/ Pb(Zr_0.2Ti_0.8)O₃ / La_0.8Sr_0.2MnO₃ heterostructures for three-dimensional circuit studies, Annalen der Physik (Leipzig) 13(1-2), 15, 2004. DOI: 10.1002/andp.200310035

C.H. Ahn, K.M. Rabe, and J.-M. Triscone, Ferroelectricity at the Nanoscale:  Local Polarization in Oxide Thin Films and Heterostructures. Science 303, 488, 2004. DOI: 10.1126/science.1092508

Y. Bason, L. Klein, J.-B. Yau, X. Hong, and C.H. Ahn, Giant planar Hall effect in colossal magnetoresistive La_0.84Sr_0.16MnO₃ thin films. Applied Physics Letters 84, 2593, 2004. DOI: 10.1063/1.1695197

Y. Bason, L. Klein, J.-B. Yau, X. Hong, and C. H. Ahn, Characterization of the magnetic anisotropy in thin films of La_1-xSr_xMnO₃ using the planar Hall effect. Physica Status Solidi (c) 1 (12), 3336, 2004. DOI: 10.1002/pssc.200405450

J. W. Reiner, F. J. Walker, R. A. McKee, C. A. Billman, J. Junquera, K. M. Rabe, and C. H. Ahn, Ferroelectric stability of BaTiO₃ in a crystalline oxide on silicon structure. Physica Status Solidi B 241 (10), 2287, 2004. DOI: 10.1002/pssb.200404932
 

2002-2003

S. Gariglio, D. Matthey, C.H. Ahn, and J.-M. Triscone, Electrostatic Tuning of Hole Density in NdBa₂Cu₃O_7-δ Films and its Effect on the Hall Response. Physical Review Letters 88(6), 067002, 2002.  DOI: 10.1103/PhysRevLett.88.067002

D. Matthey, S. Gariglio, C.H. Ahn, and J.-M. Triscone, Electrostatic Modulation of the Superconducting Transition in Thin NdBa₂Cu₃O_7-δ Films:  the Role of Classical Fluctuations. Physica C: Superconductivity 583, 372, 2002. DOI: 10.1016/S0921-4534(02)00800-6

T. Tybell, P. Paruch, C.H. Ahn, and J.-M. Triscone, Nanoscale Study of Polarization Phenomena in Pb(Zr_0.2Ti_0.8)O₃ Thin Films. SPIE Proceedings 4811, 256, 2002. DOI: 10.1117/12.455542

D. Matthey, S. Gariglio, and C.H. Ahn, and J.-M. Triscone, Field Effect and Ferroelectric Field Effect in Correlated Oxide Films. SPIE Proceedings, 4811, 236, 2002. DOI: 10.1117/12.455539

X. Hong, A. Posadas, A. Lin, and C.H. Ahn, Ferroelectric field induced tuning of magnetism in the colossal magnetoresistive oxide La_1-xSr_xMnO₃. Physical Review B 68, 134415, 2003. DOI: 10.1103/PhysRevB.68.134415

C.H. Ahn, J.-M. Triscone, and J. Mannhart, Electric field effect in correlated oxide systems. Nature 424, 1015, 2003. DOI: 10.1038/nature01878

M. Li, E.I. Altman, A. Posadas, and C.H. Ahn, The p(4x2) surface reconstruction on epitaxial WO₃ thin films. Surf. Sci, 542, 22, 2003. DOI: 10.1016/S0039-6028(03)00986-5
 

1999-2001

A.F. Marshall, L. Klein, J.S. Dodge, C.H. Ahn, J.W. Reiner, L. Miéville, L. Antognazza, A. Kapitulnik, T.H. Geballe, and M.R. Beasley, Lorentz Transmission Electron Microscope Study of Ferromagnetic Domain Walls in SrRuO₃: Statics, Dynamics, and Crystal Structure Correlation. Journal of Applied Physics 85, 4131, 1999. DOI : 10.1063/1.370322

T. Tybell, C.H. Ahn, and J.-M. Triscone, Ferroelectricity in Thin Perovskite Films. Applied Physics Letters 75(6), 856, 1999. DOI : 10.1063/1.124536.

J.S. Dodge, E. Kulatov, L. Klein, C.H. Ahn, J.W. Reiner, L. Miéville, T.H. Geballe, M.R. Beasley, A. Kapitulnik, H. Ohta, Yu. Uspenskii, and S. Halilov, Temperature-dependent local exchange splitting in SrRuO₃. Physical Review B 60, R6987, 1999. DOI: 10.1103/PhysRevB.60.R6987

C.H. Ahn, S. Gariglio, P. Paruch, T. Tybell, L. Antognazza, and J.-M. Triscone, Electrostatic Modulation of Superconductivity in Ultrathin GdBa₂Cu₃O_7-x Films. Science 284, 1152, 1999. DOI: 10.1126/science.284.5417.1152

S. Gariglio, C.H. Ahn, and J.-M. Triscone, Investigating the ferroelectric field effect in thin NdBa₂Cu₃O₇ films using the Hall effect.  Physics and Nanoengineering IV, SPIE Proceedings 4058, 2000. DOI:10.1117/12.397848

A. Lin, X. Hong, V. Wood, A. Verevkin, C.H. Ahn, R.A. McKee, F.J. Walker, and E.D. Specht, Epitaxial Growth of Pb(Zr  _0.2  Ti _0.8 )O₃ on S i and Its Nanoscale  Piezoelectric Properties. Applied Physics Letters 78, 2034. 2001. DOI: 10.1063/1.1358848
 

1994-1998

N. Terada, C.H. Ahn, D. Lew, Y. Suzuki, K.E. Kihlstrom, K.B. Do, S.B. Arnason, T.H. Geballe, R.H. Hammond, and M.R. Beasley, Surface study of YBa₂Cu₃O_7-d epitaxial films cleaned by an atomic oxygen beam. Applied Physics Letters 64, 2581, 1994. DOI: 10.1063/1.111532

S.J Benerofe, C.H. Ahn, M.M. Wang, K.E. Kihlstrom, K.B. Do, S.B. Arnason, M.M. Fejer, T.H. Geballe, M.R. Beasley, and R.H. Hammond, Dual beam atomic absorption spectroscopy for controlling thin film deposition rates. Journal of Vacuum Science & Technology B 12, 1217, 1994. DOI: 10.1116/1.587048

N. Terada, C.H. Ahn, D. Lew, Y. Suzuki, K.E. Kihlstrom, K.B. Do, S.B. Arnason, T.H. Geballe, R.H. Hammond, and M.R. Beasley, Photoemission and Tunneling Study of Epitaxial YBa₂Cu₃O_7-d Films Cleaned using an Atomic Oxygen Beam. Physica C: Superconductivity 235, 1061, 1994. DOI: 10.1016/0921-4534(94)91755-8

C.H. Ahn, J.-M. Triscone, N. Archibald, M. Decroux, R.H. Hammond, T.H. Geballe, Ø. Fischer, and M.R. Beasley, Ferroelectric Field Effect in Epitaxial Thin Film Oxide SrCuO₂/Pb(Zr_0.52Ti_0.48)O₃ Heterostructures. Science 269, 5222, 373, 1995. DOI: 10.1126/science.269.5222.373

W. Wang, R.H. Hammond, M.M. Fejer, C.H. Ahn, M.R. Beasley, M.D. Levenson, and M.L. Bortz, Diode-laser-based atomic absorption monitor using frequency-modulation spectroscopy for physical vapor deposition process control. Applied Physics Letters 67, 1375, 1995. DOI: 10.1063/1.115538

W. Wang, M.M. Fejer, R.H. Hammond, M.R. Beasley, C.H. Ahn, M.L. Bortz, and T. Day, Atomic absorption monitor for deposition process control of aluminum at 394 nm using a frequency-doubled diode laser. Applied Physics Letters 68, 729, 1996. DOI: 10.1063/1.116785

L. Klein, J.S. Dodge, C.H. Ahn, G.J. Snyder, T.H. Geballe, M.R. Beasley, A. Kapitulnik, Anomalous Spin Scattering Effects in the Badly Metallic Itinerant Ferromagnet SrRuO₃. Physical Review Letters 77, 2774, 1996. DOI: 10.1103/PhysRevLett.77.2774

C.H. Ahn, L. Antognazza, T. Tybell, K. Char, M. Decroux, R.H. Hammond, T.H. Geballe, M.R. Beasley, Ø. Fischer, and J.-M. Triscone, Ferroelectric field effect in SrCuO₂ and SrRuO₃ films. Journal of Low Temperature Physics 105, 1517, 1996. DOI: 10.1007/BF00753915

L. Klein, J.S. Dodge, C.H. Ahn, J.W. Reiner, L. Miéville, T.H. Geballe, M.R. Beasley, and A. Kapitulnik, Transport and magnetization in the badly metallic itinerant ferromagnet SrRuO₃. Journal of Physics: Condensed Matter 8, 10111, 1996. DOI:10.1088/0953-8984/8/48/026

C.H. Ahn, R.H. Hammond, T.H. Geballe, M.R. Beasley, J.-M. Triscone, M. Decroux, Ø. Fischer, L. Antognazza, and K. Char, Ferroelectric field effect in ultrathin SrRuO₃ films. Applied Physics Letters 70, 206, 1997. DOI: 10.1063/1.118203

T. Tybell, L. Antognazza, C.H. Ahn, L. Frauchiger, P. Pranyies, M. Decroux, M.G. Karkut, R. Passerini, P. Stadelmann, J. Ramm, E. Beck, Ø. Fischer, and J.-M. Triscone, Croissance et propriétés structurales de couches minces épitaxiales de Pb(Zr_xTi_1-x)O₃ et d’hétéro-structures Pb(Zr_xTi_1-x)O₃-oxydes métalliques. Le Vide 53, 48, 1997. ISSN  1266-0167 

A.F. Marshall, L. Klein, J.S. Dodge, C.H. Ahn, J.W. Reiner, L. Miéville, T.H. Geballe, M.R. Beasley, and A. Kapitulnik, Magnetic and crystallographic microstructure of SrRuO₃, studied by Lorentz TEM. Proceedings Microscopy Society of America Annual Meeting, Cleveland, OH, p. 521, 1997. ISSN: 1431-9276

C.H. Ahn, T. Tybell, L. Antognazza, K. Char, M.R. Beasley, Ø. Fischer, and J.-M. Triscone, Electronic Doping in Epitaxial Pb(Zr_0.52Ti_0.48)O₃/SrRuO₃ Heterostructures Using a Ferroelectric Field Effect. Materials Research Society Symposium Proceedings 474, 313, 1997. DOI: 10.1557/PROC-474-313

A.F. Marshall, L. Klein, C.H. Ahn, S. Dodge, J.W. Reiner, L. Antognazza, L. Miéville, A. Kapitulnik, T.H. Geballe, and M.R. Beasley, Magnetic and Crystalline Microstructure of SrRuO₃ Thin Films. Materials Research Society Symposium Proceedings 474, 223, 1997. DOI: 10.1557/PROC-474-223

C.H. Ahn, T. Tybell, L. Antognazza, K. Char, R.H. Hammond, M. R. Beasley, Ø. Fischer, and J.-M. Triscone, Local, Nonvolatile Electronic Writing of Epitaxial Pb(Zr_0.52Ti_0.48)O₃/SrRuO₃ Heterostructures. Science 276, 1100, 1997. DOI: 10.1126/science.276.5315.1100

T. Tybell, C.H. Ahn, and J.-M. Triscone, Control and imaging of ferroelectric domains over large areas with nanometer resolution in atomically smooth epitaxial Pb(Zr_0.2Ti_0.8)O₃ thin films. Applied Physics Letters 72, 1454, 1998. DOI: 10.1063/1.120591

T. Tybell, C.H. Ahn, and J.-M. Triscone, Writing Electronic Nanofeatures in Epitaxial Oxide Heterostructures. Helvetica Physica Acta 71, S1, 1998. ISSN  0018-0238

C.H. Ahn, T. Tybell, L. Antognazza, K. Char, R.H. Hammond, M.R. Beasley, Ø. Fischer, and J.-M. Triscone, Nonvolatile, Reversible Writing of Electronic Nanostructures in Epitaxial Ferroelectric/Metallic Oxide Heterostructures Using a Field Effect. Materials Research Society Symposium Proceedings 493, 29, 1998. DOI: 10.1557/PROC-493-291

L. Klein, A.F. Marshall, J.W. Reiner, C.H. Ahn, T.H. Geballe, M.R. Beasley, and A. Kapitulnik, Large Magnetoresistance of Single Crystal Films of Ferromagnetic SrRuO₃. Journal of Magnetism and Magnetic Materials 188, 319, 1998. DOI: 10.1016/S0304-8853(98)00201-7

C.H. Ahn, T. Tybell, O. Kuffer, L. Antognazza, K. Char, R.H. Hammond, M.R. Beasley, Ø. Fischer, and J-M. Triscone, Scanning Probe Microscopy for the Imaging and Control of Complex Oxides. Material Science and Engineering: B 56(2-3), 173, 1998. DOI: 10.1016/S0921-5107(98)00231-1

C.H. Ahn, T. Tybell, L. Antognazza, K. Char, M.R. Beasley, C. Beeli, P. Stadelmann, Ø. Fischer, and J.-M. Triscone, Electronic Nanofeatures in Epitaxial Ferroelectric Oxide Heterostructures. SPIE Proc, 3481, 435, 1998. DOI: 10.1117/12.335881

T. Tybell, C.H. Ahn, L. Antognazza, and J.-M. Triscone, Etude et Modification Locales de la Structure de Domaines Ferroélectriques dans des Couches Minces de Pb(Zr_xTi_1-x)O₃.  Le Vide 289, 551, 1998.  ISSN 1266-0167 

T. Tybell, C.H. Ahn, M. Foeth, and J.-M. Triscone, Nanometer Control of the Ferroelectric Polarization in Pb(Zr_0.2Ti_0.8)O₃ Thin Films. Proceedings of the Eleventh IEEE International Symposium on Applications of Ferroelectrics 431, 1998. DOI: 10.1109/ISAF.1998.786724