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Spin-orbit coupling induced by effective mass gradient

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Matos-Abiague, Alex

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Date of publication of this fulltext: 20 Apr 2010 09:05


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 ...


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