Ferromagnetic resonance induced Josephson current in a superconductor/ ferromagnet/superconductor junction

Shin Ichi Hikino; Michiyasu Mori; Saburo Takahashi; Sadamichi Maekawa

doi:10.1143/JPSJ.77.053707

Ferromagnetic resonance induced Josephson current in a superconductor/ ferromagnet/superconductor junction

Shin Ichi Hikino, Michiyasu Mori, Saburo Takahashi, Sadamichi Maekawa

Materials Property Division

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

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.

Original language	English
Article number	053707
Journal	journal of the physical society of japan
Volume	77
Issue number	5
DOIs	https://doi.org/10.1143/JPSJ.77.053707
Publication status	Published - 2008 May

Keywords

FMR
Ferromagnet
Josephson junction
RSJ model
Superconductor

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1143/JPSJ.77.053707

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abstract = "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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AU - Hikino, Shin Ichi

AU - Mori, Michiyasu

AU - Takahashi, Saburo

AU - Maekawa, Sadamichi

PY - 2008/5

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N2 - 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.

AB - 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.

KW - FMR

KW - Ferromagnet

KW - Josephson junction

KW - RSJ model

KW - Superconductor

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