Low-energy renormalization of the electron dispersion of high-Tc superconductors

R. Zeyher; A. Greco

doi:10.1103/PhysRevB.64.140510

← Back to search

Low-energy renormalization of the electron dispersion of high-Tc superconductors

R. Zeyher, A. Greco

DOI 10.1103/PhysRevB.64.140510 · Physical Review B

T1

Active bibliographic source — not scientific approval

Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.

Abstract

High-resolution angle-resolved photoemission spectroscopy studies in cuprates have detected low-energy changes in the dispersion and absorption of quasiparticles at low temperatures, in particular, in the superconducting state. Based on a 1/N expansion of the t−J-Holstein model, which includes collective antiferromagnetic fluctuations already in leading order, we argue that the observed low-energy structures are mainly caused by phonons and not by spin fluctuations, at least, in the optimal and overdoped regime.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O6.5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
YBa2Cu3O6.7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown