Spin-related phenomena in InAs/GaSb quantum wells
A. Zakharova+, I. Semenikhin+, K. A. Chao*×
+Institute of Physics and Technology RAS, 117218 Moscow, Russia
*Department of Physics, Lund University, S-22362 Lund, Sweden
×Department of Physics, Chemistry and Biology, Linköping University, S-58183 Linköping, Sweden
Abstract
We have studied theoretically the influence of symmetry breaking
mechanisms: structural inversion asymmetry, bulk inversion
asymmetry, relativistic and non-relativistic interface
Hamiltonian and warping on spin split of
levels Δ E and optical absorption of linearly polarized light
in asymmetrical quantum wells made from zinc-blende materials grown
on [001] direction. The AlSb/InAs/GaSb/AlSb broken-gap quantum
wells with hybridized electron-hole states sandwiched by the AlSb
barriers have been considered. We have obtained substantial
contributions of these effects into the absolute values of spin split
of electron and hole states and spin-flip optical transitions for the
initial state in-plane wave vectors along low symmetry directions
such as [12].