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Scientific article
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English

Existence of d-wave and s-wave solutions of Eliashberg equations

Published inHelvetica Physica Acta, vol. 68, no. 2, p. 197-198
Publication date1995
Abstract

We solve the Eliashberg equations for different models of electron-phonon coupling. In particular we study a coupling which is different on different parts of the Fermi surface in order to look for possible conditions for d-wave pairing. This is of some importance since many recent experiments claim d-wave pairing in YBCO. We find that a very localized interaction (i.e. a strong coupling within certain Fermi surface pieces, but weak coupling between different pieces) together with a Coulomb repulsion is favorable for d-wave pairing. The connection between the models and the calculated coupling and Fermi surface of real copper oxide systems is discussed.

Citation (ISO format)
SANTI, Gilles, JARLBORG, Thomas N., PETER, Martin. Existence of <i>d</i>-wave and <i>s</i>-wave solutions of Eliashberg equations. In: Helvetica Physica Acta, 1995, vol. 68, n° 2, p. 197–198.
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  • PID : unige:114696
ISSN of the journal0018-0238
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