Cluster-glass state and photon-induced effects in perovskite manganite (La0.3Nd0.7)2/3Ca1/3MnO3 films -: art. no. 144405

被引：23

作者：

Dai, JM

Song, WH

Du, JJ

Wang, JN

Sun, YP ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Solid State Phys, Key Lab Internal Frict & Defects Solids, Hefei 230031, Peoples R China

[2] Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Hong Kong, Peoples R China

[3] Natl High Magnet Field Lab, Hefei 230031, Peoples R China

[4] Univ Sci & Technol China, Key Lab Struct Res, Hefei 230026, Peoples R China

来源：

PHYSICAL REVIEW B | 2003年 / 67卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.67.144405

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The electrical and magnetic properties and photon-induced effects in perovskite manganite thin films of (La0.3Nd0.7)(2/3)Ca1/3MnO3 with the tolerance factor tapproximate to0.908 are investigated. The persistent photoconductivity (PPC) effect induced by a He-Ne laser with a photon energy of similar to2 eV and the normal photoconductivity (NPC) effect induced by a mercury lamp with photon energy near 3 eV are observed at low temperatures where the system is in (or close to) the cluster-glass (CG) state. The observed resistivity relaxations induced by laser illumination and magnetic field indicate that the CG state is unstable. The PPC, NPC, and magnetic effects are originated from different mechanisms and can be understood based on the particular CG-state-related phase separations.

引用

页数：6

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