Exchange-enhanced spin splitting in a two-dimensional electron gas in the presence of spin-orbit interaction and magnetic fields

Authors

C H Yang, Nanjing University of Information Science and TechnologyFollow
Wen Xu, Chinese Academy of Sciences
J Zhang, Yunnan University
Z Zeng, Chinese Academy of Sciences
Chao Zhang, University of WollongongFollow

RIS ID

22647

Publication Details

Yang, C., Xu, W., Zhang, J., Zeng, Z. Zhang, C. (2008). Exchange-enhanced spin splitting in a two-dimensional electron gas in the presence of spin-orbit interaction and magnetic fields. Physica E: Low-Dimensional Systems and Nanostructures, 40 (6), 1979-1981.

Abstract

Using a Greens function approach on the basis of the random-phase approximation, we examine how the many-body effect such asexchange interaction affects the spin-splitting in a two-dimensional electron gas system in the presence of the Rashba spinorbitinteraction and Zeeman splitting and of quantizing magnetic fields. We show that such a many-body interaction can lower the energylevels of the system and enlarge the spin-splitting around the Fermi level. We also find that the exchange-enhanced spin-splitting ismainly achieved via intra-Landau level scattering.