Observation of the in-plane spin-dephasing anisotropy in [111]-grown GaAs/AlGaAs quantum well
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, Beijing 100083 (China)
The electron density and temperature dependent in-plane spin-dephasing anisotropy in [111]-grown GaAs quantum well (QW) has been investigated by time-resolved magneto-Kerr rotation technique. Due to the specific symmetry of [111]-grown quantum well, the in-plane Rashba and linear Dresselhaus effective spin-orbit magnetic field is parallel to each other for electron wave vectors in all directions. However, an obvious in-plane spin-dephasing anisotropy comparing [2{sup ¯}11] with [01{sup ¯}1] crystalline orientations has been observed and discussed in this work. Our results demonstrate the innegligible spin dephasing channel through inhomogeneous broadening induced by the out-of-plane non-linear Dresselhaus field, which arises naturally from the C{sub 3} symmetry of [111]-grown GaAs QW.
- OSTI ID:
- 22283254
- Journal Information:
- Applied Physics Letters, Vol. 104, Issue 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
77 NANOSCIENCE AND NANOTECHNOLOGY
ALUMINIUM ARSENIDES
ANISOTROPY
COMPARATIVE EVALUATIONS
CRYSTAL GROWTH
ELECTRON DENSITY
GALLIUM ARSENIDES
L-S COUPLING
MAGNETIC FIELDS
NONLINEAR PROBLEMS
QUANTUM WELLS
ROTATION
SPIN
TEMPERATURE DEPENDENCE
TIME RESOLUTION