Magnetic field dependence of weak localization in La2/3Sr1/3MnO3 thin films with nonmagnetic nano-scaled precipitates

被引：3

作者：

Gao, Yuze ^{[1
,2
]}

Zhang, Jincang ^{[2
]}

Cao, Guixin ^{[3
]}

Mi, XueFei ^{[4
]}

Habermeier, Hanns-Ulrich ^{[1
,2
]}

机构：

[1] Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany

[2] Shanghai Univ, Dept Phys, Shanghai 200444, Peoples R China

[3] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

[4] Univ Hohenheim, Dept Math, D-70599 Stuttgart, Germany

来源：

SOLID STATE COMMUNICATIONS | 2013年 / 154卷

基金：

中国国家自然科学基金;

关键词：

Manganites; PLD grown thin films with precipitates; Weak localization; Anisotropic magnetoresistance;

D O I：

10.1016/j.ssc.2012.10.035

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We explore the low-temperature magnetotransport properties of La2/3Sr1/3MnO3 (LSMO) epitaxial films with nano-scaled non-magnetic ZrO2 precpitates and analyze the low-temperature resistance anomalies within the frame of precipitate-induced Quantum Interference Effects (QIE) and anisotropic magnetoresistance. Two competing mechanisms triggered by the ZrO2 nanoparticles, weak localization and magnetic domain pattern modifications, are proposed to govern the observed anomalous magnetic response at low and high magnetic fields, respectively. The occurrence of these anomalies in LSMO with non-magnetic ZrO2 clusters shines new light at defect-induced magnetoelastic coupling. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：46 / 50

页数：5

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