TY - JOUR
T1 - Orbital ac spin-hall effect in the hopping regime
AU - Entin-Wohlman, O.
AU - Aharony, A.
AU - Galperin, Y. M.
AU - Kozub, V. I.
AU - Vinokur, V.
PY - 2005/8/19
Y1 - 2005/8/19
N2 - The Rashba and Dresselhaus spin-orbit interactions are both shown to yield the low temperature spin-Hall effect for strongly localized electrons coupled to phonons. A frequency-dependent electric field E(ω) generates a spin-polarization current, normal to E, due to interference of hopping paths. At zero temperature the corresponding spin-Hall conductivity is real and is proportional to ω2. At nonzero temperatures the coupling to the phonons yields an imaginary term proportional to ω. The interference also yields persistent spin currents at thermal equilibrium, at E=0. The contributions from the Dresselhaus and Rashba interactions to the interference oppose each other.
AB - The Rashba and Dresselhaus spin-orbit interactions are both shown to yield the low temperature spin-Hall effect for strongly localized electrons coupled to phonons. A frequency-dependent electric field E(ω) generates a spin-polarization current, normal to E, due to interference of hopping paths. At zero temperature the corresponding spin-Hall conductivity is real and is proportional to ω2. At nonzero temperatures the coupling to the phonons yields an imaginary term proportional to ω. The interference also yields persistent spin currents at thermal equilibrium, at E=0. The contributions from the Dresselhaus and Rashba interactions to the interference oppose each other.
UR - http://www.scopus.com/inward/record.url?scp=27144492633&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.95.086603
DO - 10.1103/PhysRevLett.95.086603
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C2 - 16196883
AN - SCOPUS:27144492633
SN - 0031-9007
VL - 95
JO - Physical Review Letters
JF - Physical Review Letters
IS - 8
M1 - 086603
ER -