Effect of the pseudogap on T${}_c$ in the cuprates and implications for its origin

Abstract

One of the most intriguing aspects of cuprates is a large pseudogap coexisting with a high superconducting transition temperature. Here, we study pairing in the cuprates from electron-electron interactions by constructing the pair vertex using spectral functions derived from angle resolved photoemission data for a near optimal doped Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ sample that has a pronounced pseudogap. Assuming that that the pseudogap is {\it not} due to pairing, we find that the superconducting instability is strongly suppressed, in stark contrast to what is actually observed. Using an analytic approximation for the spectral functions, we can trace this suppression to the destruction of the BCS logarithmic singularity from a combination of the pseudogap and lifetime broadening. Our findings strongly support those theories of the cuprates where the pseudogap is instead due to pairing.

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Cited by in corpus (36)

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• Fluctuation diagnostics of the electron self-energy: Origin of the pseudogap physics
• Nodeless pairing in superconducting copper-oxide monolayer films on Bi2Sr2CaCu2O8+δ
• Specific temperature dependence of pseudogap in YBa${}_2$Cu${}_3$O${}_{7-\delta }$ nanolayers
• Band-edge BCS-BEC crossover in a two-band superconductor: physical properties and detection parameters
• Non-Hermitian Pseudo-Gaps
• From charge- and spin-ordering to superconductivity in the organic charge-transfer solids
• Hydrostatic-pressure effects on the pseudogap in slightly doped YBa2Cu3O7-δ single crystals
• Peculiarities in the pseudogap behavior in optimally doped YBa2Cu3O7-δ single crystals under pressure up to 1GPa
• Local origin of the pseudogap in the attractive Hubbard model
• Pseudogap phenomena in ultracold atomic Fermi gases
• A strong coupling critique of spin fluctuation driven charge order in underdoped cuprates
• Magic gap ratio for optimally robust fermionic condensation and its implications for high-Tc superconductivity
• Revisiting the vortex-core tunnelling spectroscopy in YBa${}_2$Cu${}_3$O${}_{7-\delta }$
• The Valence Transition Model of Pseudogap, Charge-Order and Superconductivity in Electron- and Hole-Doped Copper Oxides
• Detecting a preformed pair phase: The response to a pairing forcing field
• Strong particle-hole asymmetry of charge instabilities in doped Mott insulators
• Observation of emergent scaling of spin-charge correlations at the onset of the pseudogap
• $d$-wave bond-order charge excitations in electron-doped cuprates
• Temperature dependence of upper critical fields and coherence lengths for optimally-doped $YB{a}_{2}C{u}_3{O}_{7-\delta }$ thin films
• Unparticle mediated superconductivity
• Influence of strong electron irradiation on fluctuation conductivity and pseudogap in YBa${}_2$Cu${}_3$O${}_7$--$\delta$ single crystals
• Influence of electron irradiation on fluctuation conductivity and pseudogap in $YB{a}_{2}C{u}_3{O}_{7-\delta }$ single crystals
• Features of Excess Conductivity Behavior in a Magnetic Superconductor Dy${}_{0.6}$Y${}_{0.4}$Rh${}_{3.85}$Ru${}_{0.15}$B${}_4$
• The High Temperature Superconductivity in Cuprates: Physics of the Pseudogap Region
• Quasiparticle interference of heavy fermions in resonant X-ray scattering
• Study of fluctuation conductivity in YBa${}_2$Cu${}_3$O${}_7$--$\delta$ films in strong magnetic fields
• Coupled electronic and magnetic excitations in the cuprates and their role in the superconducting transition
• Pairing boost from enhanced spin-fermion coupling in the pseudogap regime
• Crucial role of Internal Collective Modes in Underdoped Cuprates
• Effects of annealing on the fluctuation conductivity and pseudogap in slightly doped $HoB{a}_{2}C{u}_3{O}_{7-\delta }$ single crystals
• Introduction to High-Temperature Superconductivity for Solid State Chemists
• Fluctuation conductivity due to the preformed local pairs
• Evolution of the pseudogap and excess conductivity of YBa${}_2$Cu${}_3$O${}_{7-\delta }$ single crystals in the course of long-term aging
• Hydrostatic pressure effect on the pseudogap in Y0.77Pr0.23Ba2Cu3O7-δsingle crystals