Photoinduced stabilization and enhancement of the ferroelectric polarization in Ba0.1Sr0.9TiO3/La0.7Ca(Sr)0.3MnO3 thin film heterostructures

被引：16
|
作者：
Sheu, Y. M. [1 ]
Trugman, S. A. [1 ]
Yan, L. [1 ]
Chuu, C.-P. [2 ]
Bi, Z. [1 ]
Jia, Q. X. [1 ]
Taylor, A. J. [1 ]
Prasankumar, R. P. [1 ]
机构：
[1] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA
[2] Acad Sinica, Inst Atom & Mol Sci, Taipei 10617, Taiwan
来源：
PHYSICAL REVIEW B | 2013年 / 88卷 / 02期
关键词：
OPTICAL-PROPERTIES; PHASE-TRANSITION; BATIO3; SRTIO3;
D O I：
10.1103/PhysRevB.88.020101
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An emerging area in condensed matter physics is the use of multilayered heterostructures to enhance ferroelectricity in complex oxides. Here we demonstrate that optically pumping carriers across the interface between thin films of a ferroelectric (FE) insulator and a ferromagnetic metal can significantly enhance the FE polarization. The photoinduced FE state remains stable at low temperatures for over one day. This occurs through screening of the internal electric field by the photoexcited carriers, leading to a larger, more stable polarization state that may be suitable for applications in areas such as data and energy storage.
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页数：5
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