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26 April 2024

» arxiv » cond-mat/0606013

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Spin injection from perpendicular magnetized ferromagnetic $delta$-MnGa into (Al,Ga)As heterostructures
C. Adelmann ; X. Lou ; H.-S. Chiang ; J.L. Hilton ; B.D. Schultz ; S. McKernan ; P.A. Crowell ; C.J. Palmstrom ;
Date:	31 May 2006
Subject:	Materials Science
Abstract:	Electrical spin injection from ferromagnetic $delta$-MnGa into an (Al,Ga)As p-i-n light emitting diode (LED) is demonstrated. The $delta$-MnGa layers show strong perpendicular magnetocrystalline anisotropy, enabling detection of spin injection at remanence without an applied magnetic field. The bias and temperature dependence of the spin injection are found to be qualitatively similar to Fe-based spin LED devices. A Hanle effect is observed and demonstrates complete depolarization of spins in the semiconductor in a transverse magnetic field.
Source:	arXiv, cond-mat/0606013
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