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Absence of quantum diffusion in two-dimensional short coherence length superconductors

Research output: Contribution to journalJournal article


<mark>Journal publication date</mark>8/02/1993
<mark>Journal</mark>Journal of Physics: Condensed Matter
Issue number6
Number of pages10
Pages (from-to)697-706
<mark>Original language</mark>English


A numerical technique is used to demonstrate that excitations of a two-dimensional superconductor of length N and finite width M are localized by spatial fluctuations in the magnitude of the order parameter DELTA(r). Results obtained using numerical finite size scaling, are consistent with the presence of a line of critical points in two dimensions. No such behaviour is found in the presence of phase fluctuations only.