Fermi arcs in cuprate superconductors: tracking the pseudogap below Tc and above T*
J.G. Storey, J.L. Tallon, G.V.M. Williams, J.W. Loram
TL;DR
This paper challenges the Fermi arc model in cuprate superconductors, demonstrating through spectroscopy and simulations that Fermi arcs are artifacts caused by temperature-dependent scattering rates, not intrinsic features.
Contribution
It introduces a new interpretation of Fermi arcs as artifacts of scattering rates, contradicting previous models of the pseudogap in cuprates.
Findings
Fermi arcs are inconsistent with Raman scattering and specific heat data.
Simulations show Fermi arcs result from T-dependent scattering rates.
The study questions the intrinsic nature of Fermi arcs in pseudogap physics.
Abstract
Using an energy-momentum dispersion for Bi2Sr2CaCu2O8 obtained from angle-resolved photoelectron spectroscopy we show that the shrinking Fermi arc model of the pseudogap is inconsistent with Raman scattering below Tc and specific heat near T*. By simulating the quasiparticle energy dispersion curves we show that Fermi arcs are an artifact of a T-dependent scattering rate.
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