Quasi-particle tunnelling between vortex cores in a mixed state superconductor

Claughton, N. R. and Lambert, Colin (1994) Quasi-particle tunnelling between vortex cores in a mixed state superconductor. Physica B: Condensed Matter, 194-19 (2). pp. 1679-1680. ISSN 0921-4526

Abstract

We examine the low lying quasi-particle states of a chain of vortices contained within a thin slab of superconductor and demonstrate that bound states of individual vortices hybridize to form bands of extended states. As a consequence of the phase gradient around a vortex, one such band is centred on zero energy and will therefore contribute to quasi-particle transport at energies far below T(c).