Effects of thermal phase fluctuations in a 2D superconductor: an exact result for the spectral function

Abstract

We consider the single particle spectral function for a two-dimensional clean superconductor in a regime of strong critical thermal phase fluctuations. In the limit where the maximum of the superconducting gap is much smaller than the Fermi energy we obtain an exact expression for the spectral function integrated over the momentum component perpendicular to the Fermi surface.

4 pages, 3 figures. References added, figures improved

References in corpus (7)

• Two-Dimensional Superconducting Fluctuations in Stripe-Ordered La(1.875)Ba(0.125)CuO(4)
• The Ground State of the Pseudogap in Cuprate Superconductors
• Towards a two-dimensional superconducting state of La${}_{2-x}$Sr${}_x$CuO${}_2$ in a moderate external magnetic field
• Quantum oscillations in underdoped YBa_2Cu_3O_6.5
• Evidence for Kosterlitz-Thouless and 3D-xy critical behavior in Bi2212
• Influence of thermal phase fluctuations on the single particle Green function in a 2D d-wave superconductor
• Influence of Thermal Fluctuations of Spin Density Wave Order Parameter on the Quasiparticle Spectral Function

Cited by in corpus (3)

• Pairing Fluctuations Determine Low Energy Electronic Spectra in Cuprate Superconductors
• Comment on 'Diamagnetism and Cooper pairing above Tc in cuprates'
• The conductivity and the magnetization around Tc in optimally-doped YBa${}_2$Cu${}_3$O${}_{7-\delta }$ revisited: quantitative analysis in terms of fluctuating superconducting pairs