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Single-charge detection by an atomic precision tunnel junction
journal contribution
posted on 2023-06-09, 08:58 authored by M G House, E Peretz, J G Keizer, Samuel HileSamuel Hile, M Y SimmonsWe demonstrate sensitive detection of single charges using a planar tunnel junction 8.5?nm wide and 17.2?nm long defined by an atomically precise phosphorus doping profile in silicon. The conductance of the junction responds to a nearby gate potential and also to changes in the charge state of a quantum dot patterned 52?nm away. The response of this detector is monotonic across the entire working voltage range of the device, which will make it particularly useful for studying systems of multiple quantum dots. The charge sensitivity is maximized when the junction is most conductive, suggesting that more sensitive detection can be achieved by shortening the length of the junction to increase its conductance.
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Publication status
- Published
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- Published version
Journal
Applied Physics LettersISSN
0003-6951Publisher
AIP PublishingExternal DOI
Issue
11Volume
104Page range
113111Department affiliated with
- Physics and Astronomy Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2018-01-15First Open Access (FOA) Date
2018-01-15First Compliant Deposit (FCD) Date
2018-01-15Usage metrics
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