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  • The superconducting order parameter in the organic layered superconductor ▫$\kappa$▫-(BEDT-TTF)▫$_2$▫Cu[N(CN)▫$_2$▫]Br
    Pinterić, Marko ; Tomić, Silvija ; Maki, Kazumi
    Highly sensitive ac susceptibility measurements were performed in order to resolve the controversy regarding the symmetry of the superconducting order parameter in ▫$\kappa$▫-BEDT-TTF materials. The ... experimentally obtained superfluid density behaviour qualitatively contradicts s-wave symmetry theoretical predictions, but disagrees also quantitatively with the ▫$d$▫-wave expected behaviour in the weak coupling limit. The mixture of ▫$d$▫-wave and ▫$s$▫-wave parameters, with a rather large proportion of the latter, describes well the results; however, it also opens new questions regarding the origin of the superconducting pairing.
    Source: Journal de physique. IV. - ISSN 1155-4339 (114, 2004, str. 245-249)
    Type of material - article, component part
    Publish date - 2004
    Language - english
    COBISS.SI-ID - 8731414