Interrelation between the pseudogap and the incoherent quasi-particle features of high-Tc superconductors

Abstract

Using a scenario of a hybridized mixture of localized bipolarons and conduction electrons, we demonstrate for the latter the simultaneous appearance of a pseudogap and of strong incoherent contributions to their quasi-particle spectrum which arise from phonon shake-off effects. This can be traced back to temporarily fluctuating local lattice deformations, giving rise to a double-peak structure in the pair distribution function, which should be a key feature in testing the origin of these incoherent contributions, recently seen in angle-resolved photoemission spectroscopy (ARPES).

4 pages, 3 figures, to be published in Phys. Rev. Lett

References in corpus (2)

• Bosonic Mode Mixing in the Superconducting State Spectral Function of Bi_2Sr_2CaCu_2O_{8+delta}
• The Atomic Limit of the Boson-Fermion Model

Cited by in corpus (4)

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• Metal-insulator crossover in the Boson-Fermion model in infinite dimensions
• From local to macroscopic coherence in systems with composite quasi-particles
• Resonant pairing isotope effect in polaronic systems