Metallic percolation in La0.67Ca0.33MnO3 thin films

被引：15

作者：

Chen, SF ^{[1
]}

Lin, PI

Juang, JY

Uen, TM

Wu, KH

Gou, YS

Lin, JY

机构：

[1] Natl Chiao Tung Univ, Dept Electrophys, Hsinchu 300, Taiwan

[2] Natl Chiao Tung Univ, Inst Phys, Hsinchu 300, Taiwan

来源：

APPLIED PHYSICS LETTERS | 2003年 / 82卷 / 08期

关键词：

D O I：

10.1063/1.1554768

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Phase separation in La0.67Ca0.33MnO3 thin films was investigated by scanning tunneling microscopy. The correlation between the grain structure and the spatial distribution of the coexisting metallic and insulating phases was evidently established. At temperatures not far below the metal-insulator transition, the spatial variation of the coexisting metallic and insulating phases is susceptible to magnetic field in an irreversible manner. The irreversibility suggests that the metallic percolation paths can be affected randomly by magnetic field. However, the variation becomes insensitive to magnetic field at lower temperatures. (C) 2003 American Institute of Physics.

引用

页码：1242 / 1244

页数：3

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