Spin-orbit interaction and spin relaxation in a two-dimensional electron gas

Abstract

Using time-resolved Faraday rotation, the drift-induced spin-orbit Field of a two-dimensional electron gas in an InGaAs quantum well is measured. Including measurements of the electron mobility, the Dresselhaus and Rashba coefficients are determined as a function of temperature between 10 and 80 K. By comparing the relative size of these terms with a measured in-plane anisotropy of the spin dephasing rate, the D'yakonv-Perel' contribution to spin dephasing is estimated. The measured dephasing rate is significantly larger than this, which can only partially be explained by an inhomogeneous g-factor.

6 pages, 5 figures

References in corpus (4)

• Coherent control of a single electron spin with electric fields
• Measurement of Rashba and Dresselhaus spin-orbit magnetic fields
• Out-of-plane spin polarization from in-plane electric and magnetic fields
• Detection of large magneto-anisotropy of electron spin dephasing in a high-mobility two-dimensional electron system in a $[001]$ GaAs/AlGaAs quantum well

Cited by in corpus (1)

• Gate-controlled spin-orbit interaction in a parabolic GaAs/AlGaAs quantum well