Phys. Rev. Lett. 85, 2801–2804 (2000)Unusual Thermodynamical and Transport Signatures of the BCS to Bose-Einstein Crossover Scenario below TcReceived 2 November 1999; published in the issue dated 25 September 2000 In this paper we present predictions for thermodynamic and transport properties of a BCS to Bose-Einstein crossover theory, below Tc, which satisfies the reasonable constraints that it yields (i) the Leggett ground state and (ii) BCS theory at weak coupling and all temperatures T. The nature of the strong coupling limit is inferred, along with the behavior of the Knight shift, superfluid density, and specific heat. Comparisons with existing data on short coherence length superconductors, such as organic and high Tc systems, are presented, which provide some support for the present picture. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.85.2801
DOI:
10.1103/PhysRevLett.85.2801
PACS:
74.20.-z, 74.25.Bt, 74.25.Fy, 74.25.Nf
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