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Nonperturbative XY-model approach to strong coupling superconductivity in two and three dimensions
Uppsala University.
Uppsala University.
1999 (English)In: PHYSICAL REVIEW B-CONDENSED MATTER, ISSN 0163-1829, Vol. 59, no 18, 12083-12089 p.Article in journal (Other scientific) Published
Abstract [en]

For an electron gas with delta-function attraction, we investigate the crossover from weak- to strong-coupling superconductivity in two and three dimensions. From mean-field theory we extract the stiffness of phase fluctuations and set up effective XY mod

Place, publisher, year, edition, pages
AMERICAN PHYSICAL SOC , 1999. Vol. 59, no 18, 12083-12089 p.
Keyword [en]
ATTRACTIVE HUBBARD-MODEL; BOSE-EINSTEIN CONDENSATION; GINZBURG-LANDAU-THEORY; SHORT COHERENCE LENGTH; BCS-SUPERCONDUCTIVITY; 2 DIMENSIONS; COOPER-PAIRS; T-C; COLLECTIVE EXCITATIONS; COMPOSITE BOSONS
Identifiers
URN: urn:nbn:se:uu:diva-67205OAI: oai:DiVA.org:uu-67205DiVA: diva2:95116
Note
Addresses: Babaev E, Free Univ Berlin, Inst Theoret Phys, Arnimallee 14, D-1000 Berlin 33, Germany. Free Univ Berlin, Inst Theoret Phys, D-1000 Berlin 33, Germany. Uppsala Univ, Inst Theoret Phys, S-75108 Uppsala, Sweden.Available from: 2008-10-17 Created: 2008-10-17 Last updated: 2011-01-14

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