Measuring current by counting electrons in a nanowire quantum dot
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Date
2008
Publication Type
Journal Article
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yes
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Abstract
We measure current by counting single electrons tunneling through an InAs nanowire quantum dot (QD). The charge detector is realized by fabricating a quantum point contact in close vicinity to the nanowire. The results based on electron counting compare well to a direct measurements of the QD current, when taking the finite bandwidth of the detector into account. The ability to detect single electrons also opens up possibilities for manipulating and detecting individual spins in nanowire QDs.
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published
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Journal / series
Volume
92 (15)
Pages / Article No.
152101-1 - 152101-3
Publisher
American Institute of Physics
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Edition / version
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Subject
III-V semiconductors; indium compounds; nanowires; quantum point contacts; semiconductor quantum dots; tunnelling
Organisational unit
03439 - Ensslin, Klaus / Ensslin, Klaus
Notes
Received 22 December 2007, Accepted 14 February 2008, Published 14 April 2008.