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Spin Hall effect in Sr2RuO4 and transition metals (Nb,Ta) |
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| Authors: | T Tanaka H Kontani DS Hirashima J Inoue |
| Institution: | a Department of Physics, Nagoya University, Furo-cho, Nagoya 464-8602, Japan b Department of Engineering, Ritsumeikan University, 1-1-1 Noji Higashi, Kusastu, Shiga 525-8577, Japan c Department of Applied Physics, Nagoya University, Furo-cho, Nagoya 464-8602, Japan |
| Abstract: | We study the intrinsic spin Hall conductivity (SHC) and the d-orbital Hall conductivity (OHC) in metallic d-electron systems based on the multiorbital tight-binding model. The obtained Hall conductivities are much larger than that in p-type semiconductors. The origin of these huge Hall effects is the “effective Aharonov-Bohm phase” induced by the signs of inter-orbital hopping integrals as well as atomic spin-orbit interaction. Huge SHC and OHC due to this mechanism is ubiquitous in multiorbital transition metals. |
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