Static and Dynamic Spin Organization in Magnetic Semiconductor Nanostructures
N. Samarth, H. Luo, J.K. Furdyna, T.M. Giebultowicz
Department of Physics, University of Notre Dame, Notre Dame IN 46556, USA

and D.D. Awschalom
Department of Physics, University of California, Santa Barbara CA 93106, USA
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We describe experiments which study static and dynamic aspects of Mn spin organization in magnetic semiconductor superlattices and quantum wells. Neutron diffraction studies of ZnSe/MnSe and ZnTe/MnSe superlattices show how static Mn spin organization in these antiferromagnetic layers may be modified by strain and lowered dimensionality. We also use a novel form of femtosecond magnetic spectroscopy to examine magnetic polaron dynamics in diluted magnetic semiconductor quantum wells, and show how the organization of Mn spins by a spin-polarized carrier population may be directly viewed in the time domain.
DOI: 10.12693/APhysPolA.82.573
PACS numbers: 75.50.Ppa, 75.25.+z