Journal
JOURNAL OF APPLIED PHYSICS
Volume 108, Issue 5, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3481063
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- Ministry of Human Resource Development (MHRD), India
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We investigate spin transport in InSb/InAlSb heterostructure using the Monte Carlo approach, generalized by including density matrix description of spin for taking spin dynamics into account. In addition to the dominant Dyakonov-Perel (DP) mechanism for spin control and relaxation, we consider magnetic interaction between electrons which assumes importance due to high electronic Lande g-factor in the material. It is found that while the effect of magnetic interaction is not important at low densities, it reduces the spin relaxation length by as much as 50% at higher densities. We also present a calculation which elucidates the suppression of decoherence attributed to wave vector dependent magnetic field in the DP relaxation mechanism. We note that magnetic interaction is a general relaxation mechanism which may assume importance in materials with high electronic Lande g-factor. (c) 2010 American Institute of Physics. [doi: 10.1063/1.3481063]
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