Superconducting transition and phase diagram of single-crystal MgB2 - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2003

Superconducting transition and phase diagram of single-crystal MgB2

Résumé

The superconducting phase diagram of MgB2 was determined from magnetization, magnetotransport, and single-crystal specific-heat measurements. A zero-temperature in-plane coherence length of 9.4 nm is determined. The superconducting anisotropy g increases from a value around 2 near Tc to above 4.5 at 22 K. For Hic a pronounced peak effect in the critical current occurs at the upper critical field. Evidence for a surface superconducting state is presented for Hic that might account for the widespread in reported values of g.
Fichier principal
Vignette du fichier
PhysRevB.67.pdf (145.62 Ko) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-00957722 , version 1 (11-03-2014)

Identifiants

Citer

U. Welp, A. Rydh, G. Karapetrov, W.K. Kwok, G.W. Crabtree, et al.. Superconducting transition and phase diagram of single-crystal MgB2. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2003, 67, pp.012505. ⟨10.1103/PhysRevB.67.012505⟩. ⟨hal-00957722⟩
129 Consultations
214 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More