Temperature and magnetic field effects on the transport controlled charge state of a single quantum dot.
Individual InAs/GaAs quantum dots are studied by micro-photoluminescence. By varying the strength of an applied external magnetic field and/or the temperature, it is demonstrated that the charge state of a single quantum dot can be tuned. This tuning effect is shown to be related to the in-plane electron and hole transport, prior to capture into the quantum dot, since the photo-excited carriers are primarily generated in the barrier.
Larsson
L A
LA
IFM, Semiconductor Materials, Linköping University, 58183, Linköping, Sweden. alarsson@ifm.liu.se.
Larsson
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Moskalenko
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Holtz
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