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Tunnelling and switching phenomena in superconducting quantum dots and Josephson junctions

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thesis
posted on 06.07.2018, 10:46 authored by Dmitry R. Gulevich
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.]

Funding

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.

History

School

  • Science

Department

  • Physics

Publisher

© D.R. Gulevich

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2006

Notes

A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy at Loughborough University.

Language

en

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