Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2006-03-14
Journal of Experimental and Theoretical Physics Letters, vol.83, issue 8 (April 2006)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
6 pages, 5 figures, reported at the International Conferences "Nanophysics and Nanoelectronics" (Nizhny Novgorod, Russia, Marc
Scientific paper
10.1134/S0021364006080091
The Bloch spinors, energy spectrum and spin density in energy bands are studied for the two-dimensional electron gas (2DEG) with Rashba spin-orbit (SO) interaction subject to one-dimensional (1D) periodic electrostatic potential of a lateral superlattice. The space symmetry of the Bloch spinors with spin parity is studied. It is shown that the Bloch spinors at fixed quasimomentum describe the standing spin waves with the wavelength equal to the superlattice period. The spin projections in these states have the components both parallel and transverse to the 2DEG plane. The anticrossing of the energy dispersion curves due to the interplay between the SO and periodic terms is observed, leading to the spin flip. The relation between the spin parity and the interband optical selection rules is discussed, and the effect of magnetization of the SO superlattice in the presence of external electric field is predicted.
Demikhovskii Ya. V.
Khomitsky D. V.
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