Differential conductance of the ferromagnet/superconductor interface of DyBa2Cu3O7/La2/3Ba1/3MnO3 heterostructures

被引：69

作者：

Vas'ko, VA ^{[1
]}

Nikolaev, KR ^{[1
]}

Larkin, VA ^{[1
]}

Kraus, PA ^{[1
]}

Goldman, AM ^{[1
]}

机构：

[1] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA

来源：

APPLIED PHYSICS LETTERS | 1998年 / 73卷 / 06期

关键词：

D O I：

10.1063/1.122020

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The voltage bias, temperature, and magnetic field dependence of the differential conductance of the interface between a half-metallic ferromagnet and a high-T-c superconductor have been studied in DyBa2Cu3O7/La2/3Ba1/3MnO3 heterostructures. Below the superconducting transition the differential conductance exhibits a dip at zero bias whose amplitude is a decreasing function of temperature and/or magnetic field. These results are interpreted qualitatively using a picture based on the suppression of Andreev reflection as a consequence of the high spin polarization of the carriers in the half-metallic ferromagnet. (C) 1998 American Institute of Physics.

引用

页码：844 / 846

页数：3

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