Spin Hall conductance of the two-dimensional hole gas in a perpendicular magnetic field

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Tianxing Ma¹ and Qin Liu^1,2
¹Department of Physics, Fudan University, Shanghai 200433, China
²Department of Physics, Central China Normal University, Wuhan 430079, China

Received 29 March 2006; revised 26 April 2006; published 14 June 2006

Thecharge and spin Hall conductance of the two-dimensional hole gaswithin the Luttinger model with and without inversion symmetry breakingterms in a perpendicular magnetic field are studied, and twokey phenomena are predicted. The sign of the spin Hallconductance is modulated periodically by the external magnetic field, whichmeans a possible application in the future. Furthermore, a resonantspin Hall conductance in the two-dimensional hole gas with acertain hole density at a typical magnetic field is indicated,which implies a likely way to firmly establish the intrinsicspin Hall effect. The charge Hall conductance is unaffected bythe spin-orbit coupling.

URL:	http://link.aps.org/doi/10.1103/PhysRevB.73.245315
DOI:	10.1103/PhysRevB.73.245315
PACS:	73.43.-f; 72.25.Dc; 72.25.Hg; 85.75.-d 73.43.-f Quantum Hall effects 72.25.Dc Spin polarized transport in semiconductors 72.25.Hg Electrical injection of spin polarized carriers 85.75.-d Magnetoelectronics; spintronics: devices exploiting spin polarized transport or integrated magnetic fields YEAR: 2006
KEYWORDS:	two-dimensional electron gas, spin Hall effect, spin-orbit interactions

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