Title: Oblique Hanle measurements of InAs/GaAs quantum dot spin-light emitting diodes
Authors: Itskos, G ×
Harbord, E
Clowes, SK
Clarke, E
Cohen, LF
Murray, R
Van Dorpe, Pol
Van Roy, W #
Issue Date: Jan-2006
Publisher: Amer inst physics
Series Title: Applied Physics Letters vol:88 issue:2
Article number: 022113
Abstract: We report on studies of electrical spin injection from ferromagnetic Fe contacts into semiconductor light emitting diodes containing single layers of InAs/GaAs self-assembled quantum dots (QDs). An oblique magnetic field is used to manipulate the spin of the injected electrons in the semiconductor. This approach allows us to measure the injected steady-state spin polarization in the QDs, P-spin as well as estimate the spin losses in the QD spin detector. After subtraction of magneto-optical effects not related to spin injection, we measured a P-spin of 7.5% at 15 K and estimated an injected spin polarization before QD recombination of around 20%.
ISSN: 0003-6951
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Associated Section of ESAT - INSYS, Integrated Systems
× corresponding author
# (joint) last author

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