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.
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页码：844 / 846
页数：3
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