Phys. Rev. Lett. 104, 026401 (2010) [4 pages]Superconducting Gap, Normal State Pseudogap, and Tunneling Spectra of Bosonic and Cuprate SuperconductorsReceived 21 October 2009; published 12 January 2010 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. © 2010 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.104.026401
DOI:
10.1103/PhysRevLett.104.026401
PACS:
71.38.-k, 72.15.Jf, 74.40.-n, 74.72.-h
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