Abstract:
The charge of subgap state in Andreev quantum dot (AQD) inserted into the superconducting loop is very sensitive to the magnetic flux threading the loop. We studied the sensitivity as a function of AQD parameters in details in Δ→∞ limit. We also accounted for a weak Coulomb interaction in AQD. We discuss a possibility of using this setup as a device detecting week magnetic field.
Citation:
I. A. Sadovskii, G. V. Lesovik, G. Blatter, “On the possibility of magnetic flux detection by Andreev quantum dot”, Pis'ma v Zh. Èksper. Teoret. Fiz., 86:3 (2007), 239–243; JETP Letters, 86:3 (2007), 210–215