THE EFFECT OF FERMI-SURFACE GEOMETRY ON THE SUPERCONDUCTIVITY GIVEN BY SPIN FLUCTUATIONS IN LA2-XSRXCUO4

Authors
BARBIELLINI B MAGNIN J PETER M
Citation
B. Barbiellini et al., THE EFFECT OF FERMI-SURFACE GEOMETRY ON THE SUPERCONDUCTIVITY GIVEN BY SPIN FLUCTUATIONS IN LA2-XSRXCUO4, Helvetica Physica Acta, 66(4), 1993, pp. 409-410
Citations number
6
Categorie Soggetti
Physics
Journal title
Helvetica Physica Acta → ACNP
ISSN journal
00180238
Volume
66
Issue
4
Year of publication
1993
Pages
409 - 410
Database
ISI
SICI code
0018-0238(1993)66:4<409:TEOFGO>2.0.ZU;2-2
Abstract
Superconductivity due to the spin fluctuation mechanism of Moriya et a l 1! and Monthoux et al 2! is treated for a realistic Fermi Surface (FS) of La2-xSrxCuO4, obtained from self-consistent LMTO band structur e calculations. For the coupling, a strongly peaked susceptibility aro und the Brillouin zone corner is used. We find that the Fermi surface shape can influence significantly the T(c) and that the most favorable case is obtained by doping with divalent Sr around x = 0.15.