Publications

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2011
Heron, J.T., M. Trassin, K. Ashraf, M. Gajek, Q. He, S.Y. Yang, Y.-H. Chu, S. Salahuddin, and Ramamoorthy Ramesh. "Electric-field-induced magnetization reversal in a ferromagnet-multiferroic heterostructure." Physical Review Letters 107 (2011).
Zhou, S.Y., Y. Zhu, M.C. Langner, Y.-D. Chuang, P. Yu, W.L. Yang, A.G. Gonzalez, N. Tahir, M. Rini, Y.-H. Chu, Ramamoorthy Ramesh, D.-H. Lee, Y. Tomioka, Y. Tokura, Z. Hussain, and R.W. Schoenlein. "Ferromagnetic enhancement of CE-type spin ordering in (Pr,Ca)MnO 3." Physical Review Letters 106 (2011).
Zhang, J.X., B. Xiang, Q. He, J. Seidel, R.J. Zeches, P. Yu, S.Y. Yang, C.H. Wang, Y.-H. Chu, L.W. Martin, A.M. Minor, and Ramamoorthy Ramesh. "Large field-induced strains in a lead-free piezoelectric material." Nature Nanotechnology 6 (2011) 98-102.
Zhang, J.X., Q. He, M. Trassin, W. Luo, D. Yi, M.D. Rossell, P. Yu, L. You, C.H. Wang, C.Y. Kuo, J.T. Heron, Z. Hu, R.J. Zeches, H.J. Lin, A. Tanaka, C.T. Chen, L.H. Tjeng, Y.-H. Chu, and Ramamoorthy Ramesh. "Microscopic origin of the giant ferroelectric polarization in tetragonal-like BiFeO3." Physical Review Letters 107 (2011).
2010
Yang, S.Y., J. Seidel, S.J. Byrnes, P. Shafer, C.-H. Yang, M.D. Rossell, P. Yu, Y.-H. Chu, J.F. Scott, J.W. Ager, L.W. Martin, and Ramamoorthy Ramesh. "Above-bandgap voltages from ferroelectric photovoltaic devices." Nature Nanotechnology 5 (2010) 143-147.
Martin, L.W., Y.-H. Chu, and Ramamoorthy Ramesh. "Advances in the growth and characterization of magnetic, ferroelectric, and multiferroic oxide thin films." Materials Science and Engineering R: Reports 68 (2010) 89-133.
Balke, N., M. Gajek, A.K. Tagantsev, L.W. Martin, Y.-H. Chu, Ramamoorthy Ramesh, and S.V. Kalinin. "Direct observation of capacitor switching using planar electrodes." Advanced Functional Materials 20 (2010) 3466-3475.
Seidel, J., P. Maksymovych, Y. Batra, A. Katan, S.-Y. Yang, Q. He, A.P. Baddorf, S.V. Kalinin, C.-H. Yang, J.-C. Yang, Y.-H. Chu, E.K.H. Salje, H. Wormeester, M. Salmeron, and Ramamoorthy Ramesh. "Domain wall conductivity in La-doped BiFeO3." Physical Review Letters 105 (2010).
Yu, P., J.-S. Lee, S. Okamoto, M.D. Rossell, M. Huijben, C.-H. Yang, Q. He, J.X. Zhang, S.Y. Yang, M.J. Lee, Q.M. Ramasse, R. Erni, Y.-H. Chu, D.A. Arena, C.-C. Kao, L.W. Martin, and Ramamoorthy Ramesh. "Interface ferromagnetism and orbital reconstruction in BiFeO 3-La0.7Sr0.3MnO3 heterostructures." Physical Review Letters 105 (2010).
Holcomb, M.B., L.W. Martin, A. Scholl, Q. He, P. Yu, C.-H. Yang, S.Y. Yang, P.-A. Glans, M. Valvidares, M. Huijben, J.B. Kortright, J. Guo, Y.-H. Chu, and Ramamoorthy Ramesh. "Probing the evolution of antiferromagnetism in multiferroics." Physical Review B - Condensed Matter and Materials Physics 81 (2010).
Pantel, D., Y.-H. Chu, L.W. Martin, Ramamoorthy Ramesh, D. Hesse, and M. Alexe. "Switching kinetics in epitaxial BiFeO3 thin films." Journal of Applied Physics 107 (2010).
2009
Seidel, J., L.W. Martin, Q. He, Q. Zhan, Y.-H. Chu, A. Rother, M.E. Hawkridge, P. Maksymovych, P. Yu, M. Gajek, N. Balke, S.V. Kalinin, S. Gemming, F. Wang, G. Catalan, J.F. Scott, N.A. Spaldin, J. Orenstein, and Ramamoorthy Ramesh. "Conduction at domain walls in oxide multiferroics." Nature Materials 8 (2009) 229-234.
Chu, Y.-H., Q. He, C.-H. Yang, P. Yu, L.W. Martin, P. Shafer, and Ramamoorthy Ramesh. "Nanoscale control of domain architectures in BiFeO 3 thin films." Nano Letters 9 (2009) 1726-1730.
Yang, S.Y., L.W. Martin, S.J. Byrnes, T.E. Conry, S.R. Basu, D. Paran, L. Reichertz, J. Ihlefeld, C. Adamo, A. Melville, Y.-H. Chu, C.-H. Yang, J.L. Musfeldt, D.G. Schlom, J.W. Ager, and Ramamoorthy Ramesh. "Photovoltaic effects in BiFeO3." Applied Physics Letters 95 (2009).
Zeches, R.J., M.D. Rossell, J.X. Zhang, A.J. Hatt, Q. He, C.-H. Yang, A. Kumar, C.H. Wang, A. Melville, C. Adamo, G. Sheng, Y.-H. Chu, J.F. Ihlefeld, R. Erni, C. Ederer, V. Gopalan, L.Q. Chen, D.G. Schldin, N.A. Spaldin, L.W. Martin, and Ramamoorthy Ramesh. "A strain-driven morphotropic phase boundary in bifeO3." Science 326 (2009) 977-980.
2008
Huijben, M., L.W. Martin, Y.-H. Chu, M.B. Holcomb, P. Yu, G. Rijnders, D.H.A. Blank, and Ramamoorthy Ramesh. "Critical thickness and orbital ordering in ultrathin La0.7 Sr0.3 MnO3 films." Physical Review B - Condensed Matter and Materials Physics 78 (2008).
Chu, Y.-H., L.W. Martin, M.B. Holcomb, M. Gajek, S.-J. Han, Q. He, N. Balke, C.-H. Yang, D. Lee, W. Hu, Q. Zhan, P.-L. Yang, A. Fraile-Rodríguez, A. Scholl, S.X. Wang, and Ramamoorthy Ramesh. "Electric-field control of local ferromagnetism using a magnetoelectric multiferroic (Nature Materials (2008) 7, (478-482))." Nature Materials 7 (2008) 678.
Chu, Y.-H., L.W. Martin, M.B. Holcomb, M. Gajek, S.-J. Han, Q. He, N. Balke, C.-H. Yang, D. Lee, W. Hu, Q. Zhan, P.-L. Yang, A. Fraile-Rodríguez, A. Scholl, S.X. Wang, and Ramamoorthy Ramesh. "Electric-field control of local ferromagnetism using a magnetoelectric multiferroic." Nature Materials 7 (2008) 478-482.
Nath, R., Y.-H. Chu, N.A. Polomoff, Ramamoorthy Ramesh, and B.D. Huey. "High speed piezoresponse force microscopy: <1 frame per second nanoscale imaging." Applied Physics Letters 93 (2008).
Kumar, A., R.C. Rai, N.J. Podraza, S. Denev, M. Ramirez, Y.-H. Chu, L.W. Martin, J. Ihlefeld, T. Heeg, J. Schubert, D.G. Schlom, J. Orenstein, Ramamoorthy Ramesh, R.W. Collins, J.L. Musfeldt, and V. Gopalan. "Linear and nonlinear optical properties of BiFeO3." Applied Physics Letters 92 (2008).
Kumar, A., N.J. Podraza, S. Denev, J. Li, L.W. Martin, Y.-H. Chu, Ramamoorthy Ramesh, R.W. Collins, and V. Gopalan. "Linear and nonlinear optical properties of multifunctional PbV O3 thin films." Applied Physics Letters 92 (2008).
Martin, L.W., S.P. Crane, Y.-H. Chu, M.B. Holcomb, M. Gajek, M. Huijben, C.-H. Yang, N. Balke, and Ramamoorthy Ramesh. "Multiferroics and magnetoelectrics: Thin films and nanostructures." Journal of Physics Condensed Matter 20 (2008).
Martin, L.W., Y.-H. Chu, M.B. Holcomb, M. Huijben, P. Yu, S.-J. Han, D. Lee, S.X. Wang, and Ramamoorthy Ramesh. "Nanoscale control of exchange bias with BiFeO 3 thin films." Nano Letters 8 (2008) 2050-2055.
Ramirez, M.O., M. Krishnamurthi, S. Denev, A. Kumar, S.-Y. Yang, Y.-H. Chu, E. Saiz, J. Seidel, A.P. Pyatakov, A. Bush, D. Viehland, J. Orenstein, Ramamoorthy Ramesh, and V. Gopalan. "Two-phonon coupling to the antiferromagnetic phase transition in multiferroic BiFeO3." Applied Physics Letters 92 (2008).
2007
Chu, Y.-H., L.W. Martin, M.B. Holcomb, and Ramamoorthy Ramesh. "Controlling magnetism with multiferroics." Materials Today 10 (2007) 16-23.

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