Ferromagnetic/DMS hybrid structures: one- and zero-dimensional magnetic traps for quasiparticles

Details Ferromagnetic/DMS hybrid structures: one- and zero-dimensional magnetic traps for quasiparticles Ferromagnetic/DMS hybrid structures: one- and zero-dimensional magnetic traps for quasiparticles

2004-11-18

arxiv.org/abs/cond-mat/0411482v1

AIP Conf. Proc. Vol. 772, 1291 (part B), (2005)

Physics

Condensed Matter

Materials Science

to appear in the Proceedings of the 27th International Conference on the Physics of Semiconductors, 2 pages, 3 figures

Scientific paper

10.1063/1.1994584

We investigated possibility of using local magnetic field originating from ferromagnetic island deposited on the top of semiconductor quantum well to produce zero- and one-dimensional traps for quasi-particles with spin. In particular we considered two shapes of experimentally made magnets - cylindrical and rectangular. In the case of ferromagnetic micro-disk the trap can localize spin in three dimensions, contrary to the rectangular micro-magnet which creates a trap that allows free propagation in one direction. We present in detail prediction for absorption spectrum around the main absorption edge in both type of micro-magnets.

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