Phys. Rev. B 70, 155322 (2004) - Spectroscopy of Rashba spin splitting in InSb quantum wells

Spectroscopy of Rashba spin splitting in InSb quantum wells

G. A. Khodaparast, R. E. Doezema, S. J. Chung, K. J. Goldammer, and M. B. Santos

Phys. Rev. B 70, 155322 – Published 22 October 2004

Abstract

We use electron spin resonance in the far infrared to probe the Landau-level spin splitting in symmetric and asymmetric InSb quantum wells. The asymmetric wells exhibit a strong deviation in behavior from the symmetric wells at low magnetic fields with apparent $g$ factors far in excess of the bulk $g$ factor of InSb. These asymmetry-induced shifts in the spin resonance depend on Landau-level index as predicted by the Bychkov-Rashba model. We analyze the shifts to extract values for the Rashba parameter.

Received 2 July 2004

DOI:https://doi.org/10.1103/PhysRevB.70.155322

©2004 American Physical Society

Authors & Affiliations

G. A. Khodaparast^*, R. E. Doezema, S. J. Chung, K. J. Goldammer, and M. B. Santos

Department of Physics and Astronomy and Center for Semiconductor Physics in Nanostructures, University of Oklahoma, Norman, Oklahoma 73019, USA

^*Author to whom correspondence should be addressed: Department of Physics, Virginia Tech, Blacksburg, VA 24061; electronic mail: khoda@vt.edu

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Issue

Vol. 70, Iss. 15 — 15 October 2004

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