Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2004-02-28
Phys. Rev. Lett. 92, 256603 (2004)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
4 pages, 4 figures
Scientific paper
10.1103/PhysRevLett.92.256603
We study transport properties of a two-dimensional electron system with Rashba spin-orbit coupling in a perpendicular magnetic field. The spin orbit coupling competes with Zeeman splitting to introduce additional degeneracies between different Landau levels at certain magnetic fields. This degeneracy, if occuring at the Fermi level, gives rise to a resonant spin Hall conductance, whose height is divergent as 1/T and whose weight is divergent as $-\ln T$ at low temperatures. The Hall conductance is unaffected by the Rashba coupling.
Ma Michael
Shen Shun-Qing
Xie Xin-Chen
Zhang Fu Chun
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