Study of Intrinsic Spin and Orbital Hall Effects in Pt Based on a (6s, 6p, 5d) Tight-Binding Model(Condensed matter : electronic structure and electrical, magnetic, and optical properties)
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概要
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We study the origin of the intrinsic spin Hall conductivity (SHC) and the d-orbital Hall conductivity (OHC) in Pt based on a multiorbital tight-binding model with spin-orbit interaction. We find that the SHC exceeds 1000he^<-1>・Ω^<-1>cm^<-1> when the resistivity ρ is smaller than 〜10μΩcm, whereas it decreases to 300he^<-1>・Ω^<-1>cm^<-1> when ρ〜100μΩcm. In addition, the OHC is still larger than the SHC. The origin of the huge spin Hall effect (SHE) and d-orbital Hall effect (OHE) in Pt is the "effective Aharonov-Bohm phase" that is induced by the interorbital transition between d_<xy>- and d_<x^2-y^2>-orbitals with the aid of the strong spin-orbit interaction.
- 社団法人日本物理学会の論文
- 2007-10-15
著者
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Inoue Jun-ichiro
Department Of Applied Physics Nagoya University
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Yamada Kosaku
College Of Science And Engineering Ritsumeikan University
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KONTANI Hiroshi
Department of Physics, Nagoya University
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Kontani Hiroshi
Department Of Physics Faculty Of Science Kyoto University
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NAITO Masayuki
Department of Physics, Nagoya University
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HIRASHIMA Dai
Department of Physics, Nagoya University
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Hirashima Dai
Department Of Physics Nagoya University
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Naito Masayuki
Department Of Physics Nagoya University
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Naito Masayuki
Department Of Biological Substances And Life Science Faculty Of Engineering Kyushu Kyoritsu Universi
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Kontani Hiroshi
Department Of Physcis Kyoto University
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Yamada Kosaku
College Of Engineering Shizuoka University
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Hirashima Dai
Department of Material Science, International Christian University, Mitaka, Tokyo 181-8585, Japan
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