UNIGE document Scientific Article
previous document  unige:23840  next document
add to browser collection
Title

Preeminent Role of the Van Hove Singularity in the Strong-Coupling Analysis of Scanning Tunneling Spectroscopy for Two-Dimensional Cuprate Superconductors
Authors
Levy De Castro, Francisco Giorgio
Berthod, Christophe
Piriou, Alexandre
Giannini, Enrico
Fischer, Oystein
Published in Physical Review Letters. 2008, vol. 101, no. 26, p. 267004
Abstract In two dimensions the noninteracting density of states displays a van Hove singularity (VHS) which introduces an intrinsic electron-hole asymmetry, absent in three dimensions. We show that due to this VHS the strong-coupling analysis of tunneling spectra in high-Tc superconductors must be reconsidered. Based on a microscopic model which reproduces the experimental data with excellent accuracy, we elucidate the peculiar role played by the VHS in shaping the tunneling spectra, and show that more conventional analysis of strong-coupling effects can lead to severe errors.
Identifiers
Full text
Article (Published version) (337 Kb) - public document Free access
Other version: http://link.aps.org/doi/10.1103/PhysRevLett.101.267004
Structures
Faculté des sciences / Section de physique / Département de physique de la matière quantique
Citation
(ISO format) 		LEVY DE CASTRO, Francisco Giorgio et al. Preeminent Role of the Van Hove Singularity in the Strong-Coupling Analysis of Scanning Tunneling Spectroscopy for Two-Dimensional Cuprate Superconductors. In: Physical Review Letters, 2008, vol. 101, n° 26, p. 267004. https://archive-ouverte.unige.ch/unige:23840

235 hits

729 downloads

Contact an author

Update request

Update

Deposited on : 2012-11-07

Export document
Format :
Citation style :