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.

引用

页数：5

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