Bogoliubov shadow bands in the normal state of superconducting systems with strong pair fluctuations

Abstract

On the basis of a scenario where electron pairing is induced by resonant two-particle scattering (the Boson Fermion model), we show how precursors of the superconducting state - in form of overdamped Bogoliubov modes - emerge in the normal state upon approaching the transition temperature from above. This result is obtained by a renormalization technique based on continuous unitary transformations (the flow equations), projecting out the coherent contributions in the electron spectral function from an incoherent background.

arXiv comment4 pages, 2 figures

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Cited by in corpus (17)

• BCS-BEC crossover at finite temperature in the broken-symmetry phase
• Renormalisation Flow and Universality for Ultracold Fermionic Atoms
• Flow Equations and Normal Ordering. A Survey
• Influence of the pair coherence on the charge tunneling through a quantum dot connected to a superconducting lead
• Interplay between the single particle and collective features in the boson fermion model
• Structural matters in HTSC; the origin and form of stripe organization and checker boarding
• Boson-Fermion Duality and Metastability in Cuprate Superconductors
• Remnant superfluid collective phase oscillations in the normal state of systems with resonant pairing
• Local dynamical lattice instabilities: Prerequisites for resonant pairing superconductivity
• Flow equation approach to the linear response theory of superconductors
• Spectroscopic Bogoliubov features near the unitary limit
• First Order Superfluid to Bose Metal Transition in Systems with Resonant Pairing
• Unconventional particle-hole mixing in the systems with strong superconducting fluctuations
• Cooperative localization-delocalization in the high Tc cuprates
• Dynamical local lattice instabilitiy triggered high tc superconductivity
• Quasiparticle states driven by a scattering on the preformed electron pairs
• Fluctuation conductivity due to the preformed local pairs