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Crossover from BCS‐superconductivity to Bose‐condensation

Drechsler, M., Zwerger, W.·1992·Annalen der Physik

Abstract

Starting from a model of free Fermions in two dimensions with an arbitrary strong effective interaction, we derive a Ginzburg‐Landau theory describing the crossover from BCS‐superconductivity to Bose‐condensation. We find a smooth crossover from the standard BCS‐limit to a Gross‐Pitaevski type equation for the order parameter in a Bose superfluid. The mean field transition temperature exhibits a maximum at a coupling strength, where the behaviour crosses over from BCS to Bose like with corresponding values of 2 Δ 0/T c ≈ 5 which are characteristic for high Tc superconductors.

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Metadata

Authors
Drechsler, M., & Zwerger, W.
Venue
Annalen der Physik
Publisher
Wiley
Published
1992-01
Volume
504
Issue
1
Pages
15-23
ISSN
  • 0003-3804 (ISSN-L)
  • 1521-3889
OpenAlex
W1981468506
Cited by
175
References
1
FWCI
2.99
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Crossover from BCS‐superconductivity to Bose‐condensation. https://app.cochat.ai/papers/10.1002/andp.19925040105
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Drechsler, M., & Zwerger, W. (1992). Crossover from BCS‐superconductivity to Bose‐condensation. Annalen der Physik. https://doi.org/10.1002/andp.19925040105

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