Spin relaxation in nanowires by hyperfine coupling |
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Authors: | C Echeverría‐Arrondo E Ya Sherman |
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Institution: | 1. Department of Physical Chemistry, Universidad del País Vasco UPV/EHU, 48080 Bilbao, Spain;2. IKERBASQUE Basque Foundation for Science, 48011 Bilbao, Bizkaia, Spain |
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Abstract: | Hyperfine interactions establish limits on spin dynamics and relaxation rates in ensembles of semiconductor quantum dots. It is the confinement of electrons which determines nonzero hyperfine coupling and leads to the spin relaxation. As a result, in nanowires one would expect the vanishing of this effect due to extended electron states. However, even for relatively clean wires, disorder plays a crucial role and makes electron localization sufficient to cause spin relaxation on the time scale of the order of 10 ns. (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) |
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Keywords: | nanowires spin relaxation hyperfine interactions |
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