Quasiparticles in the Superconducting State of High-T_c Metals

Details Quasiparticles in the Superconducting State of High-T_c Metals Quasiparticles in the Superconducting State of High-T_c Metals

2003-05-05

arxiv.org/abs/cond-mat/0305092v1

JETP Lett. 77, 671 (2003).

Physics

Condensed Matter

Strongly Correlated Electrons

8 pages, Revtex

Scientific paper

10.1134/1.1604418

We consider the behavior of quasiparticles in the superconducting state of high-T_c metals within the framework of the theory of superconducting state based on the fermion condensation quantum phase transition. We show that the behavior coincides with the behavior of Bogoliubov quasiparticles, whereas the maximum value of the superconducting gap and other exotic properties are determined by the presence of the fermion condensate. If at low temperatures the normal state is recovered by the application of a magnetic field suppressing the superconductivity, the induced state can be viewed as Landau Fermi liquid. These observations are in good agreement with recent experimental facts.

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