Attempt to measure magnetic hyperfine fields in metallic thin wires under spin Hall conditions using synchrotron-radiation Mössbauer spectroscopy

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作者：
20151600753706
机构：
[1] Mibu, K.
[2] Mitsui, T.
[3] Tanaka, M.A.
[4] Masuda, R.
[5] Kitao, S.
[6] Kobayashi, Y.
[7] Yoda, Y.
[8] Seto, M.
来源：
Mibu, K. (k_mibu@nitech.ac.jp) | 1600年 / American Institute of Physics Inc.卷 / 117期
关键词：
Measurement of the magnetic hyperfine fields in metallic thin wires under spin Hall conditions was attempted using the emerging technique; synchrotron-radiation Mössbauer spectroscopy. A Mössbauer probe layer of 57Fe (0.2 nm); 57Fe; (0.6; nm); or 119Sn (0.6 nm) was embedded as an electron spin detector near the surfaces of V; Au; Pt; and 56Fe wires. The magnitudes of the magnetic hyperfine fields at the 57Fe and 119Sn nuclear sites that could be enhanced by non-equilibrium conduction-electron spin polarization were measured both without and with the application of an electric current along the wire. Changes in the Mössbauer spectra were not clearly observed; indicating that the magnetic hyperfine field induced by non-equilibrium spin polarization is smaller than the detection limit at least for the measured systems and conditions. © 2015 AIP Publishing LLC;
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