Publications

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Journal Article
Kim, Y.-M., A. Hatt, A. Kumar, I. Ivanov, A. Morozovska, A. Tselev, Y.H. Chu, P. Yu, M.D. Biegalski, Ramamoorthy Ramesh, E. Eliseev, S.J. Pennycook, J. Rondinelli, S.V. Kalinin, and A.Y. Borisevich. "Unconventional Antiferroelectric Phase Stabilization in Thin Film BiFeO3 by Interface-Induced Rotoelectric Coupling Effect." Microscopy and Microanalysis 18 (2012) 412-413.
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).
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.
Ramirez, M.O., A. Kumar, S.A. Denev, Y.H. Chu, J. Seidel, L.W. Martin, S.-Y. Yang, R.C. Rai, X.S. Xue, J.F. Ihlefeld, N.J. Podraza, E. Saiz, S. Lee, J. Klug, S.W. Cheong, M.J. Bedzyk, O. Auciello, D.G. Schlom, J. Orenstein, Ramamoorthy Ramesh, J.L. Musfeldt, A.P. Litvinchuk, and V. Gopalan. "Spin-charge-lattice coupling through resonant multimagnon excitations in multiferroic BiFe O3." Applied Physics Letters 94 (2009).
Kumar, A., S. Denev, R.J. Zeches, E. Vlahos, N.J. Podraza, A. Melville, D.G. Schlom, Ramamoorthy Ramesh, and V. Gopalan. "Probing mixed tetragonal/rhombohedral-like monoclinic phases in strained bismuth ferrite films by optical second harmonic generation." Applied Physics Letters 97 (2010).
Kumar, A., L.W. Martin, S. Denev, J.B. Kortright, Y. Suzuki, Ramamoorthy Ramesh, and V. Gopalan. "Polar and magnetic properties of PbV O3 thin films." Physical Review B - Condensed Matter and Materials Physics 75 (2007).
Xu, X.S., T.V. Brinzari, S. Lee, Y.H. Chu, L.W. Martin, A. Kumar, S. McGill, R.C. Rai, Ramamoorthy Ramesh, V. Gopalan, S.W. Cheong, and J.L. Musfeldt. "Optical properties and magnetochromism in multiferroic BiFeO3." Physical Review B - Condensed Matter and Materials Physics 79 (2009).
Ramirez, M.O., A. Kumar, S.A. Denev, N.J. Podraza, X.S. Xu, R.C. Rai, Y.H. Chu, J. Seidel, L.W. Martin, S.-Y. Yang, E. Saiz, J.F. Ihlefeld, S. Lee, J. Klug, S.W. Cheong, M.J. Bedzyk, O. Auciello, D.G. Schlom, Ramamoorthy Ramesh, J. Orenstein, J.L. Musfeldt, and V. Gopalan. "Magnon sidebands and spin-charge coupling in bismuth ferrite probed by nonlinear optical spectroscopy." Physical Review B - Condensed Matter and Materials Physics 79 (2009).
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).
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).
Ihlefeld, J.F., A. Kumar, V. Gopalan, D.G. Schlom, Y.B. Chen, X.Q. Pan, T. Heeg, J. Schubert, X. Ke, P. Schiffer, J. Orenstein, L.W. Martin, Y.H. Chu, and Ramamoorthy Ramesh. "Adsorption-controlled molecular-beam epitaxial growth of BiFe O3." Applied Physics Letters 91 (2007).