Volume 61, Number 4, February 2003
|Page(s)||577 - 578|
|Section||Interdisciplinary physics and related areas of science and technology|
|Published online||01 February 2003|
Comment on “Anisotropic s-wave superconductivity: Comparison with experiments on ” by A. I. Posazhennikova et al.
Laboratorium voor Vaste-Stoffysica en Magnetisme,
Katholieke Universiteit Leuven
Celestijnenlaan 200 D, B-3001 Leuven, Belgium
2 Department of Theoretical Physics, Faculty of Physics, Sofia University “St. Kliment Ohridski” - 5 J. Bourchier Blvd., Bg-1164 Sofia, Bulgaria
Accepted: 13 December 2002
An analytical result for the renormalization of the jump of the heat capacity by the anisotropy of the order parameter is derived within the framework of the very recent model proposed by Posazhennikova, Dahm and Maki (Europhys. Lett., 60 (2002) 134), for both oblate and prolate anisotropy. The graph of vs. the ratio of the gaps on the equator and the pole of the Fermi surface, , allows a direct determination of the gap anisotropy parameter by fitting data from specific-heat measurements . Using the experimental value by Wang, Plackowski, and Junod (Physica C 355 (2001) 179) we find .
PACS: 74.20.Rp – Pairing symmetries (other than s-wave) / 74.25.Bt – Thermodynamic properties / 74.70.-b – Superconducting materials (excluding high- compounds)
© EDP Sciences, 2003
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.