Superconducting gap, normal state pseudogap, and tunneling spectra of bosonic and cuprate superconductors.
We develop a theory of normal metal-superconductor and superconductor tunneling in "bosonic" superconductors with strong attractive correlations taking into account coherence effects in single-particle excitation spectrum and disorder. The theory accounts for the existence of two energy scales, their temperature and doping dependencies, asymmetry, and inhomogeneity of tunneling spectra of underdoped cuprate superconductors.
Alexandrov
A S
AS
Department of Physics, Loughborough University, Loughborough LE11 3TU, United Kingdom.
Beanland
J
J