Electron and hole spin cooling efficiency in InAs quantum dots: The role of nuclear field

The spin dynamics of a resident carrier, hole or electron, in singly charged InAs/GaAs quantum dots has been measured by pump-probe experiments. The relative strength of the hole to the electron hyperfine couplings with nuclei is obtained by studying the magnetic-field dependence of the resident-car...

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Published in:Applied physics letters 2010-04, Vol.96 (17)
Main Authors: Desfonds, P., Eble, B., Fras, F., Testelin, C., Bernardot, F., Chamarro, M., Urbaszek, B., Amand, T., Marie, X., Gérard, J. M., Thierry-Mieg, V., Miard, A., Lemaître, A.
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Quantum Physics
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cited_by cdi_FETCH-LOGICAL-c364t-98fba4efb845b5b404f2985bbfa8fc57ddcae522b14e5f96d026eae691e0c3d63
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container_issue 17
container_start_page
container_title Applied physics letters
container_volume 96
creator Desfonds, P.
Eble, B.
Fras, F.
Testelin, C.
Bernardot, F.
Chamarro, M.
Urbaszek, B.
Amand, T.
Marie, X.
Gérard, J. M.
Thierry-Mieg, V.
Miard, A.
Lemaître, A.
description The spin dynamics of a resident carrier, hole or electron, in singly charged InAs/GaAs quantum dots has been measured by pump-probe experiments. The relative strength of the hole to the electron hyperfine couplings with nuclei is obtained by studying the magnetic-field dependence of the resident-carrier spin polarization. We find, in good agreement with recent theoretical studies, that the hole hyperfine coupling is ten times smaller than the electron one.
doi_str_mv 10.1063/1.3394010
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subjects Physics
Quantum Physics
title Electron and hole spin cooling efficiency in InAs quantum dots: The role of nuclear field
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