Broken spin-Hall accumulation symmetry by magnetic field and coexisted Rashba and Dresselhaus interactions

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dc.creatorChen, Son-Hsien
dc.creatorLiu, Ming-Hao
dc.creatorChen, Kuo-Wei
dc.creatorChang, Ching-Ray
dc.date2007-05-14
dc.date.accessioned2026-07-07T08:01:23Z
dc.date.available2026-07-07T08:01:23Z
dc.descriptionThe spin-Hall effect in the two-dimensional electron gas (2DEG) generates symmetric out-of-plane spin Sz accumulation about the current axis in the absence of external magnetic field. Here we employ the real space Landauer-Keldysh formalism [B. K. Nikolic et al., Phys. Rev. Lett. 95, 046601 (2005); Phys. Rev. B 73, 075303 (2006)] by considering a four-terminal setup to investigate the circumstances in which this symmetry is broken. For the absence of Dresselhaus interaction, starting from the applied out-of-plane B corresponding to Zeeman splitting energy 0 - 0.5 times the Rashba hopping energy tR, the breaking process is clearly seen. The influence of the Rashba interaction on the magnetization of the 2DEG is studied herein. For coexisted Rashba tR and Dresselhaus tD spin-orbit couplings in the absence of B, interchanging tR and tD reverses the entire accumulation pattern.
dc.description3 pages, 2 figures, appears in the proceedings of 10th MMM/INTERMAG conference
dc.identifierhttps://arxiv.org/abs/0705.1884
dc.identifierhttp://arxiv.org/abs/0705.1884
dc.identifierJ. Appl. Phys. 101, 09D513 (2007)
dc.identifierdoi:10.1063/1.2712541
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/128893
dc.subjectMesoscale and Nanoscale Physics
dc.titleBroken spin-Hall accumulation symmetry by magnetic field and coexisted Rashba and Dresselhaus interactions
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