Publications
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X Author: A. Kumar
2012
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. DOI
2010
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). DOI
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). DOI
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). DOI
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). DOI
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. DOI
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). DOI
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). DOI
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). DOI
2007
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). DOI
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). DOI