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Title: Contributions of critical and Gaussian fluctuations to the specific heat in YBa2Cu3O7-x and in HgBa2Ca2Cu3O8 under a magnetic field
Authors: Dorbolo, S ×
Houssa, Michel
Ausloos, M #
Issue Date: Jan-1998
Publisher: Iop publishing ltd
Series Title: Superconductor science & technology vol:11 issue:1 pages:76-81
Abstract: The mean-field electronic specific heat C-e of a superconductor in the presence of a magnetic field is first calculated. The model contains the following as ingredients: an energy spectrum presenting saddle points in the band structure, a Josephson coupling between CuO planes and a d(x2-y2) gap symmetry. Superconductivity fluctuations are next extracted from published data on the specific heat of a YBa2Cu3O7-x and of an HgBa2Ca2Cu3O8 single crystal. Critical XY and Gaussian regimes are deduced from mean-field calculations. Magnetic field cross-overs are evaluated and physical parameters such as the Ginzburg-Landau number and the distance between CuO planes are calculated as tests.
URI: 
ISSN: 0953-2048
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Semiconductor Physics Section
× corresponding author
# (joint) last author

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