Ferroelectric-field-induced tuning of magnetism in the colossal magnetoresistive oxide La1-xSrxMnO3 -: art. no. 134415

被引：121
|
作者：
Hong, X [1 ]
Posadas, A [1 ]
Lin, A [1 ]
Ahn, CH [1 ]
机构：
[1] Yale Univ, Dept Appl Phys, New Haven, CT 06520 USA
来源：
PHYSICAL REVIEW B | 2003年 / 68卷 / 13期
关键词：
D O I：
10.1103/PhysRevB.68.134415
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A ferroelectric field effect approach is presented for modulating magnetism in the colossal magnetoresistive oxide La1-xSrxMnO3 (LSMO). The ferromagnetic Curie temperature of ultrathin LSMO films was shifted by 35 K reversibly using the polarization field of the ferroelectric oxide Pb(ZrxTi1-x)O-3 in a field effect structure. This shift was also observed in magnetoresistance measurements, with the maximum magnetoresistance ratio at 6 T increasing from 64% to 77%. This model system approach does not introduce substitutional disorder or structural distortion, demonstrating that regulating the carrier concentration alone changes the magnetic phase transition temperature and leads to colossal effects.
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页数：5
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