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(Color online) (a) The rf electric circuit and the optical micrograph (top view) of the system consisting of electrodes and a magnetic nanowire. A magnetic field is applied to the substrate plane at an angle of to the longitudinal axis of the nanowire. The dc voltage across the wire is measured by using a bias tee. The in-plane magnetization distribution (b) with and (c) without a DW at the bottom of the wire loop is visualized by OOMMF. (d) The MFM image of the residual state with DW in the wire with width. (e) The MFM image calculated by the magnetization configuration shown in Fig. 1(c).
(Color online) The dc voltage induced by the spin torque diode effect as a function of the rf current frequency. The red solid line and the black dashed line correspond to the dc voltage spectrum with and without DW, respectively.
(Color online) The dc voltage spectra for SC1 and SC2 as a function of rf power during the existence of DW.
(Color online) The magnetic fingerprint of (a) SC2 and (b) SC3. Each spectrum is obtained after the DW is erased and then reintroduced again.
Summary of wire shapes and sizes used in the present study.
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