Electric modulation of magnetization at the BaTiO3/La0.67Sr0.33MnO3 interfaces

Authors

• H. Lu, University of Nebraska-Lincoln
• Thomas A. George, University of Nebraska-LincolnFollow
• Yong Wang, University of Nebraska-LincolnFollow
• Ihor Ketsman, University of Nebraska-LincolnFollow
• John D. Burton, University of Nebraska-LincolnFollow
• C.-W. Bark, University of Wisconsin-Madison
• Sangjin Ryu, University of Wisconsin-MadisonFollow
• Dong Jik Kim, University of Nebraska-LincolnFollow
• J. Wang, University of Nebraska-Lincoln
• Christian Binek, University of Nebraska, LincolnFollow
• Peter A. Dowben, University of Nebraska-LincolnFollow
• Andrei Sokolov, University of Nebraska-LincolnFollow
• C. B. Eom, University of Wisconsin - MadisonFollow
• Evgeny Y. Tsymbal, University of Nebraska-LincolnFollow
• Alexei Gruverman, University of Nebraska-LincolnFollow

Document Type

Article

Date of this Version

2012

Citation

APPLIED PHYSICS LETTERS 100, 232904 (2012); http://dx.doi.org/10.1063/1.4726427

Comments

Copyright 2012 American Institute of Physics. Used by permission.

Abstract

We report large (>10%) magnetization modulation by ferroelectric polarization reversal in the ferroelectric-ferromagnetic BaTiO₃/La_0.67Sr_0.33MnO₃ (BTO/LSMO) heterostructures. We find that the electrically induced change in magnetization is limited to the BTO/LSMO interface but extends about 3 nm deep into the LSMO layer—far beyond the expected screening length of metallic LSMO. It is suggested that this effect is due to a metal-insulator transition occurring at the BTO/LSMO interface as a result of electrostatic doping.