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    題名: Surface-Assisted Spin Hall Effect in Au Films with Pt Impurities
    作者: 郭光宇
    Guo, Guang-Yu
    貢獻者: 應物所
    日期: 2010.11
    上傳時間: 2014-01-24 12:36:38 (UTC+8)
    摘要: We show, both experimentally and theoretically, a novel route to obtain giant room temperature spin-Hall effect due to surface-assisted skew scattering. In the experiment, we report the spin-Hall effect in Pt-doped Au films with different thicknesses . The giant spin-Hall angle is obtained for at room temperature, while it is much smaller for the sample. Combined ab initio and quantum Monte Carlo calculations for the skew scattering due to a Pt impurity show on the Au (111) surface, while it is small in bulk Au. The quantum Monte Carlo results show that the spin-orbit interaction of the Pt impurity on the Au (111) surface is enhanced, because the Pt levels are lifted to the Fermi level due to the valence fluctuation. In addition, there are two spin-orbit interaction channels on the Au (111) surface, while only one in bulk Au.
    關聯: Physical Review Letters, 105, 216401
    資料來源: http://link.aps.org/doi/10.1103/PhysRevLett.105.216401
    資料類型: article
    DOI 連結: http://dx.doi.org/10.1103/PhysRevLett.105.216401
    DOI: 10.1103/PhysRevLett.105.216401
    顯示於類別:[應用物理研究所 ] 期刊論文

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