Magnetic Field-Induced Landau Fermi Liquid in High-T_c Metals

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  • 18 April 2003
Abstract
We consider the behavior of strongly correlated electron liquid in high-temperature superconductors within the framework of the fermion condensation model. We show that at low temperatures the normal state recovered by the application of a magnetic field larger than the critical field can be viewed as Landau Fermi liquid induced by the magnetic field. In this state, the Wiedemann-Franz law is held and the elementary excitations are the Landau Fermi Liquid quasiparticles. The recent experimental verifications of the Wiedemann-Franz law in heavily overdoped, overdoped and optimally doped cuprates strongly support the existence of fermion condensate in high-T_c metals.

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