TITLE

AlGaAs/GaAs single electron transistor fabricated without modulation doping

AUTHOR(S)
See, A. M.; Klochan, O.; Hamilton, A. R.; Micolich, A. P.; Aagesen, M.; Lindelof, P. E.
PUB. DATE
March 2010
SOURCE
Applied Physics Letters;3/15/2010, Vol. 96 Issue 11, p112104
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We have fabricated a quantum dot single electron transistor, based on AlGaAs/GaAs heterojunction without modulation doping, which exhibits clear and stable Coulomb blockade oscillations. The temperature dependence of the Coulomb blockade peak line shape is well described by standard Coulomb blockade theory in the quantum regime. Bias spectroscopy measurements have allowed us to directly extract the charging energy, and showed clear evidence of excited state transport, confirming that individual quantum states in the dot can be resolved.
ACCESSION #
48698081

 

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