Lambert, Colin and Hui, V. C. (1990) *Localisation of excitations by particle-hole scattering in inhomogeneous superconductors.* Physica B: Condensed Matter, 165-16 (2). pp. 1107-1108. ISSN 0921-4526

## Abstract

We demonstrate that the quasi-particle excitations of a two dimensional inhomogeneous superconductor may be localised by spatial fluctuations in the order parameter Δ (r). Two models of disorder are introduced. In the first, the magnitude of Δ (r) varies randomly, but the phase is constant. In the second, the phase varies randomly with position, but the magnitude of Δ (r) is constant. A finite size scaling technique is used to compute the inverse localisation length of long strips of finite width. The results suggest that for a two dimensional superconductor, fluctuations in |Δ(r)| can localise excitations, while fluctuations in the phase alone cannot.

Item Type: | Article |
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Journal or Publication Title: | Physica B: Condensed Matter |

Subjects: | Q Science > QC Physics |

Departments: | Faculty of Science and Technology > Physics |

ID Code: | 58120 |

Deposited By: | ep_importer_pure |

Deposited On: | 24 Oct 2012 10:17 |

Refereed?: | Yes |

Published?: | Published |

Last Modified: | 18 Jun 2015 06:05 |

Identification Number: | |

URI: | http://eprints.lancs.ac.uk/id/eprint/58120 |

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