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VOLUME 77 (2003) | ISSUE 4 | PAGE 217
Spin dynamics of semiconductor electrons in the hybrid ferromagnet/semiconductor structure
PACS: 42.50.Md, 72.25.-b, 75.70.-i
Abstract
We analyze the recent experimental study by R. J. Epstein et al. [Phys. Rev. B65, 121202 (2002)] on spin dynamics of semiconductor electrons in the hybrid ferromagnet/semiconductor structure by using a simple model based on the Bloch equations. A comparison between the model calculations and the experimental observations shows that the spin relaxation rate is strongly anisotropic. We interpret this anisotropy as a manifestation of the exchange interaction between metallic and semiconductor electrons at the ferromagnet/semiconductor interface.