Dielectrophoresis model for the colossal electroresistance of phase-separated manganites

被引：31

作者：

Dong, Shuai ^{[1
]}

Zhu, Han ^{[2
]}

Liu, J. -M. ^{[1
,3
]}

机构：

[1] Nanjing Univ, Nanjing Natl Lab Microstruct, Nanjing 210093, Peoples R China

[2] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA

[3] Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China

来源：

PHYSICAL REVIEW B | 2007年 / 76卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.76.132409

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We propose a dielectrophoresis model for phase-separated manganites. Without increase of the fraction of metallic phase, an insulator-metal transition occurs when a uniform electric field applied across the system exceeds a threshold value. Driven by the dielectrophoretic force, the metallic clusters reconfigure themselves into stripes along the direction of electric field, leading to the filamentous percolation. This process, which is time dependent, irreversible, and anisotropic, is a probable origin of the colossal electroresistance in manganites.

引用

页数：4

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