Matos-Abiague, Alex (2010) Spin-orbit coupling induced by effective mass gradient. Physical Review B (PRB) 81, p. 165309.
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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.
|Date:||9 April 2010|
|Institutions:||Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Jaroslav Fabian|
|Projects:||SFB 689: Spinphänomene in reduzierten Dimensionen|
|Keywords:||spin-orbit coupling, mass gradient, k.p theory, semiconductor heterostructures, structure inversion asymmetry|
|Subjects:||500 Science > 530 Physics|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Yes|
|Deposited On:||20 Apr 2010 09:05|
|Last Modified:||20 Apr 2010 09:05|
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Spin-orbit coupling induced by a mass gradient. (deposited 11 Jan 2010 09:51)
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