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Title: Tunnelling and switching phenomena in superconducting quantum dots and Josephson junctions
Author: Gulevich, Dmitry R.
Awarding Body: Loughborough University
Current Institution: Loughborough University
Date of Award: 2006
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This work is devoted to investigation of tunnelling and switching phenomena arising in Condensed Matter Physics. In the first part I investigate quantum tunnelling of a single Abrikosov vortex in a superconducting quantum dot. The escape of a vortex carrying magnetic flux leads to a switching of a quantum dot to non-magnetic state. Tunnelling of a vortex manifests itself as a spontaneous relaxation of magnetization. I showed that it is possible to use an instanton technique based on path integral formalism even in presence of forces breaking time-reversal symmetry.
Supervisor: Not available Sponsor: Loughborough University ; European Physical Society ; Committee of Vice-Chancellors and Principals of the Universities of the United Kingdom ; European Science Foundation
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available