Phys. Rev. B 78, 045301 (2008) [6 pages]Four-step evolution of spin Hall conductance: Tight-binding electrons with Rashba coupling in a magnetic fieldSee Also: Publisher's Note Received 23 January 2008; revised 21 May 2008; published 2 July 2008; publisher error corrected 7 July 2008 We report the investigation of magnetotransport properties of tight-binding electrons with Rashba spin-orbit coupling (SOC). Four-step evolutions of the spin Hall and charge-Hall conductances (SHC and CHC) have been found when fixing the magnetic field and tuning the Rashba SOC: the SHC shows size-dependent resonant jumps and even changes its sign; the CHC exhibits three successive quantum jumps. More arrestingly, such four-step evolutions are reflected in topological characters of edge states of a cylindrical system and are robust against weak disorder. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.78.045301
DOI:
10.1103/PhysRevB.78.045301
PACS:
72.25.−b, 71.10.Ca, 71.70.Ej, 73.43.Cd
See AlsoPublisher's Note: Yi-Fei Wang, Yang Zhao, and Chang-De Gong, Publisher's Note: Four-step evolution of spin Hall conductance: Tight-binding electrons with Rashba coupling in a magnetic field [Phys. Rev. B 78, 045301 (2008)], Phys. Rev. B 78, 049902 (2008). |
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