Condensation energy in strongly coupled superconductors
Robert Haslinger, Andrey V. Chubukov
DOI 10.1103/PhysRevB.67.140504 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We consider the condensation energy Ec in superconductors where the pairing is electronic in origin and is mediated by a collective bosonic mode. We use magnetically mediated superconductivity as an example, and show that for spin-fermion couplings λ∼1, the physics is qualitatively different from the BCS theory as the condensation energy results predominantly from the feedback on spin excitations. The same feedback effect accounts for the gain of the the kinetic energy at strong couplings due to an “undressing” feedback on the fermions. We show that Ec decreases at λ⩾2 and argue that this implies that coherent superconductivity gradually yields to the pseudogap.
Similar papers
Condensation energy in strongly coupled superconductors
similarity 0.98Robert Haslinger & Andrey V. Chubukov
Source status unknown — claims are unverified
Condensation energy in strongly coupled superconductors
similarity 0.92Robert Haslinger & Andrey V. Chubukov · 2002 · arXiv:cond-mat/0209600
Source status unknown — claims are unverified
Superconducting transition in a mixture of bosons and fermions
similarity 0.90E. Piegari & S. Caprara
Source status unknown — claims are unverified
Thermodynamic properties in the evolution from BCS to Bose-Einstein condensation for a d-wave superconductor at low temperatures
similarity 0.90R. D. Duncan & C. A. R. Sá de Melo
Source status unknown — claims are unverified
BCS-BEC crossover in a two-band superconductor with odd-parity hybridization
similarity 0.90G. N. Bremm et al.
Source status unknown — claims are unverified
Manifestations of the pseudogap in the boson-fermion model for Bose-Einstein-condensation-driven superconductivity
similarity 0.89J. Ranninger & J. M. Robin
Source status unknown — claims are unverified