Electron and Hole Spin Splitting and Photogalvanic Effect in Quantum Wells

Details Electron and Hole Spin Splitting and Photogalvanic Effect in Quantum Wells Electron and Hole Spin Splitting and Photogalvanic Effect in Quantum Wells

2003-07-31

arxiv.org/abs/cond-mat/0307758v1

Phys. Rev. B 67, 235320 (2003)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 3 figures

Scientific paper

10.1103/PhysRevB.67.235320

A theory of the circular photogalvanic effect caused by spin splitting in quantum wells is developed. Direct interband transitions between the hole and electron size-quantized subbands are considered. It is shown that the photocurrent value and direction depend strongly on the form of the spin-orbit interaction. The currents induced by structure-, bulk-, and interface-inversion asymmetry are investigated. The photocurrent excitation spectra caused by spin splittings in both conduction and valence bands are calculated.

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