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arXiv · 1202.0382

Towards precise measurement of oscillatory domain wall by ferromagnetic Josephson junction

Shin-ichi Hikino·Michiyasu Mori·Wataru Koshibae·Sadamichi Maekawa
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Abstract

We theoretically propose a principle for precise measurement of oscillatory domain wall (DW) by a ferromagnetic Josephson junction, which is composed of a ferromagnetic wire with DW and two superconducting electrodes. The current-voltage curve exhibits stepwise structures, only when DW oscillates in the ferromagnetic wire. The voltage step appears at V = n(\hbar/2e)\omega_DW with the fundamental constant \hbar/e, integer number n, and the DW frequency \omega_DW. Since V can be determined in the order of 10^9 accuracy, the oscillatory DW will be measured more precisely than present status by conventional method.

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Shin-ichi Hikino, Michiyasu Mori, Wataru Koshibae, Sadamichi Maekawa. 2012-02-02. Towards precise measurement of oscillatory domain wall by ferromagnetic Josephson junction. https://doi.org/10.1063/1.3701782

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