Anomalous Magnetic Field Dependence of the Thermodynamic Transition Line in the Isotropic Superconductor K,Ba BiO3 - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physical Review Letters Année : 2002

Anomalous Magnetic Field Dependence of the Thermodynamic Transition Line in the Isotropic Superconductor K,Ba BiO3

Résumé

Thermodynamic (specific heat, reversible magnetization, tunneling spectroscopy) and transport measurements have been performed on high quality K, Ba BiO3 single crystals. The temperature dependence of the magnetic field HCp corresponding to the onset of the specific heat anomaly presents a clear positive curvature. HCp is significantly smaller than the field HD for which the superconducting gap vanishes but is closely related to the irreversibility line deduced from transport data. Moreover, the temperature dependence of the reversible magnetization presents a strong deviation from the Ginzburg-Landau theory emphasizing the peculiar nature of the superconducting transition in this material.
Fichier principal
Vignette du fichier
PhysRevLett.88.pdf (168.94 Ko) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-00959104 , version 1 (13-03-2014)

Identifiants

Citer

S. Blanchard, Thierry Klein, J. Marcus, I. Joumard, A. Sulpice, et al.. Anomalous Magnetic Field Dependence of the Thermodynamic Transition Line in the Isotropic Superconductor K,Ba BiO3. Physical Review Letters, 2002, 88, pp.177201. ⟨10.1103/PhysRevLett.88.177201⟩. ⟨hal-00959104⟩
181 Consultations
149 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More