Boson-exchange superconductor model with a Van Hove singularity

Authors
Mamedov, TA de Llano, M
Citation
Ta. Mamedov et M. De Llano, Boson-exchange superconductor model with a Van Hove singularity, PHYS LETT A, 257(3-4), 1999, pp. 201-208
Citations number
34
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS A
ISSN journal
03759601 → ACNP
Volume
257
Issue
3-4
Year of publication
1999
Pages
201 - 208
Database
ISI
SICI code
0375-9601(19990628)257:3-4<201:BSMWAV>2.0.ZU;2-0
Abstract
A realistically-shaped electron-boson interaction Eliashberg spectrum alpha (2)F(omega) is shown to be crucial in determining superconducting transitio n temperatures when the Fermi-energy shift from a Van Hove saddle-point sin gularity lies between the minimum and maximum boson frequencies in alpha(2) F(omega). (C) 1999 Published by Elsevier Science B.V. All rights reserved.