TY - JOUR
T1 - Intrinsic spin Hall effect in graphene
T2 - Numerical calculations in a multiorbital model
AU - Onari, Seiichiro
AU - Ishikawa, Yasuhito
AU - Kontani, Hiroshi
AU - Inoue, Jun Ichiro
PY - 2008/9/11
Y1 - 2008/9/11
N2 - We study the spin Hall effect (SHE) in graphene using a realistic multiorbital tight-binding model that includes the atomic spin-orbit interaction. The SHE is found to be induced by the spin-dependent Aharonov-Bohm phase. In the metallic case, the calculated values for the spin Hall conductivity (SHC) are much smaller than the quantized Hall conductivity for realistic parameter values of metallic graphene. In the insulating case, quantization of the SHC is violated due to the multiorbital effect. The present study suggests that the SHE in a honeycomb lattice is enhanced by chemical doping, such as the substitution of carbon atoms with boron atoms.
AB - We study the spin Hall effect (SHE) in graphene using a realistic multiorbital tight-binding model that includes the atomic spin-orbit interaction. The SHE is found to be induced by the spin-dependent Aharonov-Bohm phase. In the metallic case, the calculated values for the spin Hall conductivity (SHC) are much smaller than the quantized Hall conductivity for realistic parameter values of metallic graphene. In the insulating case, quantization of the SHC is violated due to the multiorbital effect. The present study suggests that the SHE in a honeycomb lattice is enhanced by chemical doping, such as the substitution of carbon atoms with boron atoms.
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U2 - 10.1103/PhysRevB.78.121403
DO - 10.1103/PhysRevB.78.121403
M3 - Article
AN - SCOPUS:52249103747
SN - 1098-0121
VL - 78
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
IS - 12
M1 - 121403
ER -