Theoretical investigations of spin splittings in asymmetric AlSb/InAs/GaSb heterostructures and the possibility of electric field induced magnetization
✍ Scribed by X Cartoixà; D.Z.-Y Ting; E.S Daniel; T.C McGill
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 197 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0749-6036
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✦ Synopsis
We use the effective bond orbital model method to examine the spin splitting due to the Rashba effect in AlSb/InAs/GaSb asymmetric heterostructures. We find for the resulting two-dimensional electron gas (2DEG) under study that large theoretical values of the Bychkov-Rashba coefficients in the range of 30 × 10 -10 to 50 × 10 -10 eV • cm can be achieved. Finally, we present a phenomenon that might lead to a direct observation of the Rashba effect. We derive an expression, valid in the diffusive limit, for the spin polarization of the current resulting from a bias parallel to the plane of the quantum well.