Geometrical dependence of Josephson current induced by ferromagnetic resonance in ferromagnetic Josephson junctions

被引：1
|
作者：
Hikino, S. [1 ]
Mori, M. [1 ,2 ]
Takahashi, S. [1 ,2 ]
Maekawa, S. [1 ,2 ]
机构：
[1] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan
[2] Japan Sci & Technol Agcy JST, CREST, Chiyoda Ku, Tokyo 1020075, Japan
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2010年 / 470卷
关键词：
Josephson effect; Superconductor; Ferromagnet; Ferromagnetic resonance;
D O I：
10.1016/j.physc.2009.10.092
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We study the effect of the spin dynamics on the phase dynamics in a ferromagnetic Josephson junction, which is composed of two superconductors separated by a ferromagnet. A new phenomenological model for the phase variable is proposed by including the spin dynamics excited by a ferromagnetic resonance (FMR) in the gauge invariant phase of s-wave SC's. We find that the I-V characteristics show step structures due to the FMR. The step amplitude induced by FMR in the I-V characteristic has a strong dependence on the geometry of the cross section in the junction. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：S819 / S821
页数：3
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