Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2007-06-18
Pis'ma v ZhETF 86, 239 (2007)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
6 pages, 4 figures; minor corrections
Scientific paper
10.1134/S0021364007150131
The charge of the subgap states in an Andreev quantum dot (AQD; this is a quantum dot inserted into a superconducting loop) is very sensitive to the magnetic flux threading the loop. We study the sensitivity of this device as a function of its parameters for the limit of a large superconducting gap. In our analysis, we account for the effects of a weak Coulomb interaction within the dot. We discuss the suitability of this setup as a device detecting weak magnetic fields.
Blatter Gianni
Lesovik Gordey B.
Sadovskyy I. A.
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