Current fluctuation in ferromagnet/unconventional superconductor junctions

被引：1

作者：

Yoshida, N ^{[1
]}

Tanaka, Y

Inoue, JI

Kashiwaya, S

机构：

[1] Nagoya Univ, Dept Appl Phys, Nagoya, Aichi 4648603, Japan

[2] Electrotech Lab, Tsukuba, Ibaraki 3058568, Japan

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2001年 / 352卷 / 1-4期

关键词：

current fluctuation; Andreev reflection; d-wave superconductor; ferromagnet/unconventional superconductor junctions;

D O I：

10.1016/S0921-4534(00)01724-X

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The current fluctuation in the ferromagnet/insulator/d-wave superconductor junction is studied theoretically. With the increase of the magnitude of the exchange potential in ferromagnet, the value of noise power-to-current ratio at zero-bias voltage for transparent junction approaches 4e as expected in the normal metal/insulator/conventional superconductor junctions in the tunneling limit. This result reflects the suppression of the Andreev reflection due to the exchange potential in the ferromagnet. The obtained results can be used as a measurement of the magnitude of the spin polarization of the ferromagnet as well as the height of the zero-bias conductance peak. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：199 / 202

页数：4

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