Gapless superconductivity and the Fermi arc in the cuprates
A. V. Chubukov, M. R. Norman, A. J. Millis, and E. Abrahams
TL;DR
This paper explains the Fermi arc in underdoped cuprates as a result of inelastic scattering in a d-wave superconductor, using Eliashberg theory to model the spectral gap evolution.
Contribution
It introduces a single lifetime model within strong coupling Eliashberg theory to describe the temperature dependence of the spectral gap in cuprates.
Findings
Fermi arc can be explained by inelastic scattering effects.
The single lifetime model accurately describes spectral gap evolution.
Provides a theoretical framework linking scattering to Fermi arc phenomena.
Abstract
We argue that the Fermi arc observed in angle resolved photoemission measurements in underdoped cuprates can be understood as a consequence of inelastic scattering in a d-wave superconductor. We analyze this phenomenon in the context of strong coupling Eliashberg theory, deriving a `single lifetime' model for describing the temperature evolution of the spectral gap as measured by single particle probes such as photoemission and tunneling.
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