Nonlinear electrical conduction and broad band noise in the charge-ordered rare earth manganate Nd0.5Ca0.5MnO3

被引：37

作者：

Guha, A ^{[1
]}

Ghosh, A

Raychaudhuri, AK

Parashar, S

Raju, AR

Rao, CNR

机构：

[1] Indian Inst Sci, Dept Phys, Bangalore 560012, Karnataka, India

[2] Jawaharlal Nehru Ctr Adv Sci Res, Chem & Phys Mat Unit, Bangalore 560064, Karnataka, India

[3] Jawaharlal Nehru Ctr Adv Sci Res, CSIR, Ctr Excellence Chem, Bangalore 560064, Karnataka, India

[4] Indian Inst Sci, Dept Phys, Bangalore 560012, Karnataka, India

来源：

APPLIED PHYSICS LETTERS | 1999年 / 75卷 / 21期

关键词：

D O I：

10.1063/1.125358

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Measurements of the dc transport properties and the low-frequency conductivity noise in films of charge-ordered Nd0.5Ca0.5MnO3 grown on Si substrate reveal the existence of a threshold field in the charge-ordered regime beyond which strong nonlinear conduction sets in along with a large broad band conductivity noise. Threshold-dependent conduction disappears as T --> T-CO, the charge-ordering temperature. This observation suggests that the charge-ordered state gets depinned at the onset of the nonlinear conduction. (C) 1999 American Institute of Physics. [S0003-6951(99)05247-X].

引用

页码：3381 / 3383

页数：3

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