Work

Saddle-point van Hove singularity and the phase diagram of high- Tc cuprates

Year: 2007

Type: article

Abstract: We examine the generic phase behavior of high-${T}_{c}$ cuprate superconductors in terms of a universal van Hove singularity in the strongly overdoped region. Using a dispersion derived from angle-resolved photoemission spectroscopy (ARPES), we solve the BCS gap equation and show that the pairing interaction or pairing energy cutoff must be a rapidly declining function of doping. This result is prejudicial to a phonon-based pairing interaction and more consistent with a magnetic or magnetically enhanced interaction.

Source: Physical Review B

DOI: 10.1103/physrevb.76.174522

Authors: J. G. Storey, J. L. Tallon, G. V. M. Williams

Institutions: Victoria University of Wellington, Industrial Research Limited, MacDiarmid Institute for Advanced Materials and Nanotechnology

Language: English

Topic: Physics of Superconductivity and Magnetism

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2073854573

FWCI: 1.59

Cites: 35

Cited by: 37

Related to: 10