Spin-orbit effect on electron-electron interaction and fine structure of electron complexes in quantum dots

Details Spin-orbit effect on electron-electron interaction and fine structure of electron complexes in quantum dots Spin-orbit effect on electron-electron interaction and fine structure of electron complexes in quantum dots

2009-01-19

arxiv.org/abs/0901.2893v2

Physical Review B Vol.79, No.19, 195305 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 4 figures, final version

Scientific paper

10.1103/PhysRevB.79.195305

Spin-orbit effects on electron-electron interaction are studied theoretically. The corrections to the Coulomb interaction of quantum well electrons induced by the spin-orbit coupling are derived. The developed theory is applied to calculate the energy spectrum fine structure of an electron pair triplet states localized in small lateral disk-shaped quantum dots. We show that the spin degeneracy of a triplet state is completely lifted in anisotropic quantum dots. Isotropic quantum dots also demonstrate peculiar fine structure of triplet states caused by the spin-orbit interaction.

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