Joule-heating-enhanced colossal magnetoresistance in La0.8Ca0.2MnO3 films

被引：15

作者：

Chen, Y. F. ^{[1
]}

Ziese, M. ^{[1
]}

Esquinazi, P. ^{[1
]}

机构：

[1] Univ Leipzig, Div Superconduct & Magnetism, D-04103 Leipzig, Germany

来源：

APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 08期

关键词：

D O I：

10.1063/1.2337280

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The temperature, magnetic field, and current dependence of the magnetotransport properties of a La0.8Ca0.2MnO3 film were studied in a regime of strong Joule heating. In current-voltage curves an abrupt hysteretic transition was observed which is induced by global and nondestructive Joule heating of the manganite film by a large electric current. The apparent magnetoresistance measured at an appropriate temperature/current parameter set is strongly enhanced by a feedback between magnetoresistance and Joule heating. (c) 2006 American Institute of Physics.

引用

页数：3

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