This article has an erratum: [erratum]
Volume 58, Number 3, May 2002
|Page(s)||435 - 441|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||01 August 2002|
Specific heat and disorder in the mixed state of non-magnetic borocarbides
Institut für Halbleiter- und Mikrosystemtechnik
Technische Universität (TU) Dresden -
D-01062 Dresden, Germany
2 Institut für Tieftemperaturphysik, TU Dresden - D-01062 Dresden, Germany
3 Institut für Festkörper- und Werkstofforschung e.V. D-01171 Dresden, Postfach 270116, Germany
4 Max-Planck-Institut für Chemische Physik fester Stoffe - D-01187 Dresden, Germany
Corresponding author: email@example.com
Accepted: 11 February 2002
The temperature and magnetic-field dependence of the specific heat in the superconducting (sc) mixed state as well as the upper critical field have been measured for polycrystalline x and ( y)2 samples. The linear-in-T electronic specific-heat contribution exhibits significant deviations from the usual linear-in-H law resulting in a disorder-dependent negative curvature of . The data point to the quasi-clean limit for -substitutions and to a transition to the quasi-dirty limit for -substitutions. The -dependence is discussed in the unitary d-wave as well as in the quasi-clean s-wave limits. From a consideration of data only, d-wave pairing cannot be ruled out.
PACS: 74.70.Dd – Ternary, quaternary and multinary compounds (including Chevrel phases, borocarbides etc.) / 74.62.Dh – Effects of crystal defects, doping, and substitution / 74.25.Bt – Thermodynamic properties
© EDP Sciences, 2002
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.