Journal
EUROPEAN PHYSICAL JOURNAL B
Volume 17, Issue 1, Pages 95-102Publisher
SPRINGER
DOI: 10.1007/s100510070163
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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-T-c superconductors, we reproduce also the T-c - 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.
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