Grain-boundary magnetoconductance and inelastic tunneling

被引：16

作者：

Ziese, M ^{[1
]}

Bollero, A

Panagiotopoulos, I

Moutis, N

机构：

[1] Univ Leipzig, Div Superconductiv & Magnetism, D-04103 Leipzig, Germany

[2] Univ Ioannina, Dept Mat Sci & Engn, GR-45110 Ioannina, Greece

[3] NCSR Demokritos, Inst Mat Sci, Aghia Paraskevi 15310, Greece

来源：

PHYSICAL REVIEW B | 2005年 / 72卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.72.024453

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Measurements of the magnetoconductance of La0.7Sr0.3MnO3 pressed powder samples in both the low and high field regime are reported. The magnetoconductance was calculated in a model based on inelastic tunneling via Mn sites situated in the tunneling barrier. This model satisfactorily accounts for the strong decrease of the low field magnetoconductance as a function of temperature due to spin depolarization in the inelastic tunneling processes. The susceptibility of the tunneling barrier was derived by two different methods showing the consistency of the model.

引用

页数：5

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