Ferromagnetic resonance induced josephson current in a Superconductor/Ferromagnet/Superconductor junction

被引：16
|
作者：
Hikino, Shin-ichi [1 ]
Mori, Michiyasu [1 ]
Takahashi, Saburo [1 ,2 ]
Maekawa, Sadamichi [1 ,2 ]
机构：
[1] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan
[2] Japan Sci & Technol Agcy, CREST, Saitama 4330012, Japan
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2008年 / 77卷 / 05期
关键词：
josephson junction; superconductor; ferromagnet; RSJ model; FMR;
D O I：
10.1143/JPSJ.77.053707
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We propose the phase dynamics induced by spin waves in a superconductor/ferromagnet/superconductor (SC/FM/SC) Josephson junction. The resistively shunted junction (RSJ) model, which describes the dynamics of superconducting phase difference, is extended to include the spin wave excitation by ferromagnetic resonance (FMR) using the gauge invariant phase difference between two s-wave superconductors. The current-voltage characteristics show step structures when the magnetization in FM is driven by tuning the microwave frequency to FMR in the SC/FM/SC junction. The result presents a new route to observe the spin wave excitation using the Josephson effect.
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页数：4
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