Title: Comment on : nonmonotonic $d_{x^{2}-y^{2}}$ superconducting order parameter in Nd$_{2-x}$Ce$_x$CuO$_4$
Authors : Venturini, Francesca
Hackl, R.
Michelucci, U.
Published in : Physical Review Letters
Volume(Issue) : 90
Issue : 14
Pages : 149701-1
Pages to: 149701-1
Publisher / Ed. Institution : American Physical Society
Issue Date: 11-Apr-2002
License (according to publishing contract) : Licence according to publishing contract
Type of review: Peer review (Publication)
Language : English
Subjects : Physics; Superconductivity; Strongly Correlated Electrons
Subject (DDC) : 530: Physics
Abstract: In a recent letter Blumberg and collaborators claim that a non-monotonic $d_{x^2-y^2}$ form for the superconducting order parameter is required to explain their Raman scattering measurements in Nd$_{2-x}$Ce$_x$CuO$_4$ . In this comment we show with a simple model calculation that the basis for this conclusion is insufficient. The proposed functional dependence of the gap is neither consistent with their measured spectra nor compatible with other experimental results. Therefore the issue of the superconduing gap in electron-doped systems cannot be considered solved by now.
Departement: School of Engineering
Organisational Unit: Institute of Applied Mathematics and Physics (IAMP)
Publication type: Article in scientific Journal
DOI : 10.1103/PhysRevLett.90.149701
ISSN: 0031-9007
1079-7114
URI: https://digitalcollection.zhaw.ch/handle/11475/6208
Appears in Collections:Publikationen School of Engineering

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