2000/02/29 by L. Benfatto, S. Caprara, C. Di Castro · 3 citations
Chemistry · Physics and Astronomy · #Advanced Physical and Chemical Molecular Interactions #Physics of Superconductivity and Magnetism #Superconductivity in MgB2 and Alloys #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1007/s100510070163
published as Eur. Phys. J. B, 71 (2000), pag. 95 · 13 pages (EPY style), 7 enclosed figures, to appear on Eur. Phys. J. B
arxiv created 2000/05/15 · openalex publication_date 2000/08/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04
We describe the spectral properties of underdoped cuprates as resulting from a momentum-dependent pseudogap in the normal state spectrum. Such a model accounts, within a BCS approach, for the doping dependence of the critical temperature and for the two-parameter leading-edge shift observed in the cuprates. By introducing a phenomenological temperature dependence of the pseudogap, which finds a natural interpretation within the stripe quantum-critical-point scenario for high-Tc superconductors, we reproduce also the Tc-T^* bifurcation near optimum doping. Finally, we briefly discuss the different role of the gap and the pseudogap in determining the spectral and thermodynamical properties of the model at low temperatures.