The overdoped end of the cuprate phase diagram

Abstract

Studying the disappearance of superconductivity at the end of the overdoped region of the cuprate phase diagram offers a different approach for investigating the interaction which is responsible for pairing in these materials. In the underdoped region this question is complicated by the presence of charge and stripe ordered phases as well as the pseudogap. In the overdoped region the situation appears simpler with only a normal phase, a superconducting phase and impurity scattering. Here, for the overdoped region, we report the results of a combined dynamic cluster approximation (DCA) and a weak Born impurity scattering calculation for a $t-t^{\prime }-U$ Hubbard model. We find that a decrease in the $d$-wave pairing strength of the two-particle scattering vertex is closely coupled to changes in the momentum and frequency structure of the magnetic spin fluctuations as the system is overdoped. Treating the impurity scattering within a disordered BCS $d$-wave approximation, we see how the combined effects of the decreasing $d$-wave pairing strength and weak impurity scattering lead to the end of the $T_c$ dome.

5 pages, 5 figures

References in corpus (11)

• Continuous-time auxiliary field Monte Carlo for quantum impurity models
• Sub-matrix updates for the Continuous-Time Auxiliary Field algorithm
• Pseudogap phase of cuprate superconductors confined by Fermi surface topology
• Fermiology and electronic homogeneity of the superconducting overdoped cuprate Tl-2201 revealed by quantum oscillations
• Cu-spin dynamics in the overdoped regime of La_2-x_Sr_x_Cu_1-y_Zn_y_O_4_ probed by muon spin relaxation
• Lifshitz Transition in the Two Dimensional Hubbard Model
• Systematic analysis of a spin-susceptibility representation of the pairing interaction in the 2D Hubbard model
• Doping dependence of the magnetic excitations in La${}_{2-x}$Sr${}_x$CuO${}_4$
• High-energy magnetic excitations in overdoped La${}_{2-x}$Sr${}_x$CuO${}_4$ studied by neutron and resonant inelastic X-ray scattering
• Band Structure of Overdoped Cuprate Superconductors: Density Functional Theory Matching Experiments
• Decrease of d-wave pairing strength in spite of the persistence of magnetic excitations in the overdoped Hubbard model

Cited by in corpus (11)

• Universal scaling of the critical temperature and the strange-metal scattering rate in unconventional superconductors
• Differentiated roles of Lifshitz transition on thermodynamics and superconductivity in La2-xSrxCuO4
• Strongly-overdoped La${}_{2-x}$Sr${}_x$CuO${}_4$: Evidence for Josephson-coupled grains of strongly-correlated superconductor
• Spontaneous time-reversal symmetry breaking by disorder in superconductors
• Effect of realistic out-of-plane dopant potentials on the superfluid density of overdoped cuprates
• Superconductivity due to fluctuating loop currents
• Observation of Electride-like $s$ States Coexisting with Correlated $d$ Electrons in NdNiO${}_2$
• Transport properties of very overdoped nonsuperconducting Bi2Sr2CuO6+d thin films
• La${}_{2-x}$Ba${}_x$CuO${}_4$ as a superconducting Rosetta Stone
• Superconductivity in the bilayer Hubbard model: Are two Fermi surfaces better than one?
• Dynamic Parallel Spin Stripes from the 1/8 anomaly to the End of Superconductivity in La${}_{1.6-x}$Nd${}_{0.4}$Sr${}_x$CuO${}_4$