Two-dimensional imaging of the spin-orbit effective magnetic field

Abstract

We report on spatially resolved measurements of the spin-orbit effective magnetic field in a GaAs/InGaAs quantum-well. Biased gate electrodes lead to an electric-field distribution in which the quantum-well electrons move according to the local orientation and magnitude of the electric field. This motion induces Rashba and Dresselhaus effective magnetic fields. The projection of the sum of these fields onto an external magnetic field is monitored locally by measuring the electron spin-precession frequency using time-resolved Faraday rotation. A comparison with simulations shows good agreement with the experimental data.

6 pages, 4 figures

References in corpus (7)

• An Exact SU(2) Symmetry and Persistent Spin Helix in a Spin-Orbit Coupled System
• Current induced electron spin polarization in strained semiconductors
• Orbital mechanisms of electron spin manipulation by an electric field
• Measurement of Rashba and Dresselhaus spin-orbit magnetic fields
• Electric Dipole Induced Spin Resonance in Disordered Semiconductors
• Out-of-plane spin polarization from in-plane electric and magnetic fields
• Nonuniform Rashba-Dresselhaus spin precession along arbitrary paths

Cited by in corpus (3)

• Spin-orbit interaction and spin relaxation in a two-dimensional electron gas
• Magnetic breakdown of cyclotron orbits in systems with Rashba and Dresselhaus spin-orbit coupling
• Anisotropic universal conductance fluctuations in disordered quantum wires with Rashba and Dresselhaus spin-orbit interaction and applied in-plane magnetic field