ジョセフソン接合を用いた磁壁のブリージングモードの観測方法
書誌事項
- タイトル別名
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- Possible method to observe the breathing mode of a magnetic domain wall in the Josephson junction
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説明
A magnetic domain wall (DW) behaves as a massive particle with elasticity. Sliding and oscillation of the DW have been observed experimentally, whereas vibration of a width in the DW, "breathing mode", has not been measured so far. We theoretically propose how to observe the breathing mode by the Josephson junction having a ferromagnetic layer between superconducting electrodes. The current-voltage ($I$-$V$) curve is calculated by an equivalent circuit of the resistively shunted junction model. The breathing mode is identified by stepwise structures in the $I$-$V$ curve, which appear at the voltages $V$=$n(\hbar/2e$)$\omega$ with the fundamental constant $\hbar/e$, integer number $n$, and the frequency of the breathing mode $\omega$.
収録刊行物
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- Journal of Physics; Condensed Matter
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Journal of Physics; Condensed Matter 26 (25), 255702_1-255702_5, 2014-06
IOP Publishing