Trap state capture and reemission relaxation in ceramic La1-xCaxMnO3 with Ca-content x=0.51

被引：4

作者：

Baerner, K. ^{[1
]}

Deng, H. ^{[2
]}

Wang, H. ^{[2
]}

Annaorazov, M. ^{[4
]}

Medvedeva, I. V. ^{[3
]}

Yang, C. P. ^{[2
]}

机构：

[1] Univ Gottingen, Dept Phys, Inst Phys 4, D-37077 Gottingen, Germany

[2] Hubei Univ, Fac Phys & Elect Technol, Wuhan 430062, Peoples R China

[3] Inst Met Phys, Ekaterinburg 620219, Russia

[4] Eastern Mediterranean Univ, Famagusta, North Cyprus, Turkey

来源：

PHYSICA B-CONDENSED MATTER | 2010年 / 405卷 / 03期

关键词：

Colossal magnetoresistance; manganites; electroresistance; trap state emission; RESISTANCE; MAGNETORESISTANCE;

D O I：

10.1016/j.physb.2009.10.041

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

An unusual relaxation type of transport phenomenon occurs in La049Ca0.51 MnO3 which is connected with electron or hole trap state capture and reemission out of a 65 meV potential well. The phenomenon is observed in ceramic samples only if (1) charge order domains occur with a lateral distance between 3 and 30 nm and if (2) E- and H-field sensitive near boundary metastable states exist. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：999 / 1003

页数：5