Optical response of a ferromagnetic-diluted magnetic semiconductor hybrid structure

Redlinski, P.; Rappoport, T. G.; Libal, A.; Furdyna, J. K.; Jankó, B.; Wojtowicz, T.
March 2005
Applied Physics Letters;3/14/2005, Vol. 86 Issue 11, p113103
Academic Journal
We investigate the possibility of using local magnetic fields to produce one-dimensional traps in hybrid structures for any quasiparticle possessing a spin degree of freedom. We consider a system composed of a diluted magnetic semiconductor quantum well buried below a micron-sized ferromagnetic island. A localized magnetic field is produced by a rectangular ferromagnet kept in a single domain phase. We make quantitative predictions for the optical response of the system as a function of distance between the micromagnet and the quantum well, electronic g factor, and thickness of the micromagnet.


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