Spin accumulation and decay in magnetic Schottky barriers

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Bauer, Gerrit E.W. and Tserkovnyak, Yaroslav and Brataas, Arne and Ren, Jun and Xia, Ke and Zwierzycki, Maciej and Kelly, Paul J. (2005) Spin accumulation and decay in magnetic Schottky barriers. Physical Review B: Condensed matter and materials physics, 72 (15). p. 155304. ISSN 1098-0121

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Abstract:The theory of charge and spin transport in forward-biased Schottky barriers reveals characteristic and experimentally relevant features. The conductivity mismatch is found to enhance the current-induced spin imbalance in the semiconductor. The GaAs¿MnAs interface resistance is obtained from an analysis of the magnetic-field-dependent Kerr rotation experiments by Stephens et al. and compared with first-principles calculations for intrinsic interfaces. With increasing current bias, the interface transparency grows toward the theoretical values, reflecting increasingly efficient Schottky barrier screening.
Item Type:Article
Copyright:©2005 The American Physical Society
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/52939
Official URL:http://dx.doi.org/10.1103/PhysRevB.72.155304
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Metis ID: 224964