Temperature and doping dependence of high-energy kink in cuprates

Abstract

It is shown that spectral functions within the extended t-J model, evaluated using the finite-temperature diagonalization of small clusters, exhibit the high-energy kink in single-particle dispersion consistent with recent angle-resolved photoemission results on hole-doped cuprates. The kink and waterfall-like features persist up to large doping and to temperatures beyond $J$ hence the origin can be generally attributed to strong correlations and incoherent hole propagation at large binding energies. In contrast, our analysis predicts that electron-doped cuprates do not exhibit these phenomena in photoemission.

4 pages, 4 figures

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Cited by in corpus (6)

• Quasiparticles at the verge of localization near the Mott metal-insulator transition in a two-dimensional material
• High Energy Dispersions in Bi2Sr2CaCu2O8 High Temperature Superconductor from Laser-Based Angle-Resolved Photoemission
• Effect of strong correlations on the high energy anomaly in hole- and electron-doped high-Tc superconductors
• Spin-polaron band structure and hole pockets in underdoped cuprates
• Finite temperature spectral function of a hole in a quantum antiferromagnet and role of phonons
• Role of dynamical non-double-occupancy excitations on the quasiparticle damping of the $t-J$ model in the large-$N$ limit