Spin Splitting in Symmetrical SiGe Quantum Wells

Details Spin Splitting in Symmetrical SiGe Quantum Wells Spin Splitting in Symmetrical SiGe Quantum Wells

2003-10-09

arxiv.org/abs/cond-mat/0310200v1

Phys. Rev. B 69, 115333(1-5) (2004)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 1 figure

Scientific paper

10.1103/PhysRevB.69.115333

Spin splitting of conduction electron states has been analyzed for all possible point symmetries of SiGe quantum well structures. A particular attention is paid to removal of spin degeneracy caused by the rotoinversion asymmetry of a (001) heterointerface between two diamond-lattice materials. The asymmetry is shown to result in spin splitting of both Rashba and Dresselhaus types in symmetrical SiGe quantum wells. Consequences of the spin splitting on spin relaxation are discussed.

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