Role of linear and cubic terms for the drift-induced Dresselhaus spin-orbit splitting in a two-dimensional electron gas

Abstract

The Dresselhaus spin-orbit interaction (SOI) of a series of two-dimensional electron gases (2DEGs) hosted in GaAs/AlGaAs and InGaAs/GaAs (001) quantum wells (QWs) is measured by monitoring the precession frequency of the spins as a function of an in-plane electric field. The measured spin-orbit-induced spin-splitting is linear in the drift velocity, even in the regime where the cubic Dresselhaus SOI is important. We relate the measured splitting to the Dresselhaus coupling parameter, the QW confinement, the Fermi wavenumber and to strain effects. From this, the coupling parameter is determined quantitatively, including its sign.

6 pages, 3 figures

References in corpus (10)

• Emergence of the persistent spin helix in semiconductor quantum wells
• Measurement of Rashba and Dresselhaus spin-orbit magnetic fields
• Gate-controlled spin-orbit interaction in a parabolic GaAs/AlGaAs quantum well
• Ballistic Spin Resonance
• Hot-electron effect in spin dephasing in $n$-type GaAs quantum wells
• Cubic Dresselhaus Spin-Orbit Coupling in 2D Electron Quantum Dots
• Oscillatory D'yakonov-Perel' spin dynamics in two dimensional electron gases
• g-Factor Tuning and Manipulation of Spins by an Electric Current
• Mapping spin-orbit splitting in strained InGaAs epilayers
• Spin-orbit interaction and spin relaxation in a two-dimensional electron gas

Cited by in corpus (3)

• Interface Contributions to the Spin-Orbit Interaction Parameters of Electrons at the (001) GaAs/AlGaAs Interface
• g-Factor Modification in a Bulk InGaAs Epilayer by an In-plane Electric Field
• Driving spin and charge in quantum wells by surface acoustic waves