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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/33774

Title: Tunnelling and switching phenomena in superconducting quantum dots and Josephson junctions
Authors: Gulevich, Dmitry R.
Issue Date: 2006
Publisher: © D.R. Gulevich
Abstract: 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. [Continues.]
Description: A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy at Loughborough University.
Sponsor: Loughborough University (research studentship). European Physical Society (European Mobility Scheme for Physics Students, EMSPS). Committee of Vice-Chancellors and Principals of the Universities of the United Kingdom (Overseas Research Studentship, ORS). European Science Foundation.
URI: https://dspace.lboro.ac.uk/2134/33774
Appears in Collections:PhD Theses (Physics)

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