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Matos-Abiague, Alex (2010) Spin-orbit coupling induced by effective mass gradient. Physical Review B (PRB) 81, p. 165309.
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Abstract
The existence of a spin-orbit coupling (SOC) induced by the gradient of the effective mass in low-dimensional heterostructures is revealed. In structurally asymmetric quasi-two-dimensional semiconductor heterostructures the presence of a mass gradient across the interfaces results in a SOC which competes with the SOC created by the electric field in the valence band. However, in graded quantum wells subjected to an external electric field, the mass-gradient induced SOC can be finite even when the electric field in the valence band vanishes.
| Item Type: | Article | ||||||||||
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| Institutions: | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Jaroslav Fabian | ||||||||||
| Projects: | SFB 689: Spinphänomene in reduzierten Dimensionen | ||||||||||
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| Keywords: | spin-orbit coupling, mass gradient, k.p theory, semiconductor heterostructures, structure inversion asymmetry | ||||||||||
| Subjects: | 500 Science > 530 Physics | ||||||||||
| Status: | Published | ||||||||||
| Refereed: | Yes, this version has been refereed | ||||||||||
| Created at the University of Regensburg: | Yes | ||||||||||
| Owner: | Alex Matos-Abiague | ||||||||||
| Deposited On: | 20 Apr 2010 11:05 | ||||||||||
| Last Modified: | 20 Apr 2010 11:05 | ||||||||||
| Item ID: | 14479 |
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- Spin-orbit coupling induced by a mass gradient. (deposited 11 Jan 2010 10:51)
- Spin-orbit coupling induced by effective mass gradient. (deposited 20 Apr 2010 11:05) [Currently Displayed]
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