Fast-electron magneto-optical spectrum of a two-dimensional electron gas in the presence of spin-orbit interaction and quantizing magnetic fields

Date

2007

Authors

Yang, C.H.
Xu, Wen
Tang, CS

Journal Title

Journal ISSN

Volume Title

Publisher

American Physical Society

Abstract

In this paper, we present a theoretical study of the optical spectrum induced by electron-electron interaction in a spin-split two-dimensional electron gas (2DEG) in the presence of high magnetic fields. The presence of the Zeeman splitting and the Rashba spin-orbit interaction (RSOI) is considered so that the profile of the magneto-optical conductivity depends strongly on spintronic coefficients. We find that in sharp contrast to the case of a spin-degenerate 2DEG, the presence of the RSOI in a 2DEG can open up new channels for magneto-optical transition via absorption scattering. The unique features of the selection rules for optical transition in a spin-split 2DEG are examined and the dependence of the magneto-optical spectrum on radiation frequency, magnetic field, and sample parameters is discussed. This study is relevant to the characterization of the Rashba spintronic systems using magneto-optical experiments and to the application of systems such as terahertz magneto-optical devices.

Description

Keywords

Citation

Source

Physical Review B: Condensed Matter and Materials

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

DOI

10.1103/PhysRevB.76.155301

Restricted until

2037-12-31