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Temperature dependence of D'yakonov-Perel' spin relaxation in zinc blende semiconductor quantum structures

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arxiv cond-mat/0407348 v1 pith:33ID74KE submitted 2004-07-14 cond-mat.mes-hall

Temperature dependence of D'yakonov-Perel' spin relaxation in zinc blende semiconductor quantum structures

classification cond-mat.mes-hall
keywords spinblendequantumrelaxationsemiconductorstructurestemperaturezinc
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The D'yakonov-Perel' mechanism, intimately related to the spin splitting of the electronic states, usually dominates the spin relaxation in zinc blende semiconductor quantum structures. Previously it has been formulated for the two limiting cases of low and high temperatures. Here we extend the theory to give an accurate description of the intermediate regime which is often relevant for room temperature experiments. Employing the self-consistent multiband envelope function approach, we determine the spin splitting of electron subbands in n-(001) zinc blende semiconductor quantum structures. Using these results we calculate spin relaxation rates as a function of temperature and obtain excellent agreement with experimental data.

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