Physics – Condensed Matter – Superconductivity
Scientific paper
1998-05-13
Phys. Rev. Lett. 80, 5643 (1998)
Physics
Condensed Matter
Superconductivity
4 pages, 3 figures, to be published in Phys. Rev. Lett
Scientific paper
10.1103/PhysRevLett.80.5643
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).
Ranninger Julius
Romano Alfonso
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