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[摘要]：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(h/2e)omega(DW) with the fundamental constant h/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. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3701782] |
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