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          Institute: MPI für Festkörperforschung     Collection: FKF Publikationen 2002     Display Documents

ID: 7478.0, MPI für Festkörperforschung / FKF Publikationen 2002
Anisotropy of the upper critical field and critical current in single crystal MgB2
Authors:Lyard, L.; Samuely, P.; Szabó, P.; Klein, T.; Marcenat, C.; Paulius, L.; Kim, K. H. P.; Jung, C. U.; Lee, H. S.; Kang, B.; Choi, S.; Lee, S. I.; Marcus, J.; Blanchard, S.; Jansen, A. G. M.; Welp, U.; Karapetrov, G.; Kwok, W. K.
Date of Publication (YYYY-MM-DD):2002
Title of Journal:Physical Review B
Issue / Number:18
Sequence Number of Article:180502
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:We report on specific-heat, high-magnetic-field transport, and
ac-susceptibility measurements on MgB2 single crystals. The
upper critical field for magnetic fields perpendicular and
parallel to the basal planes is presented in the entire
temperature range. A very different temperature dependence has
been observed in the two directions, which yields a
temperature-dependent anisotropy with Gammasimilar to5 at low
temperatures and similar to2 near T-c. A peak effect is
observed for mu(0)Hsimilar to2 T parallel to the c axis, and
the critical current density presents a sharp maximum for H
parallel to the ab plane.
External Publication Status:published
Document Type:Article
Communicated by:Michaela Asen-Palmer
Affiliations:MPI für Festkörperforschung
External Affiliations:; CNRS, Etud Proprietes Elect Solides Lab, Boite Postale 166, F-38042 Grenoble 9, France
; CEA Grenoble, DRFMC SPSMS, F-38054 Grenoble, France
; Univ Grenoble 1, F-38041 Grenoble 9, France
; Slovak Acad Sci, Inst Expt Phys, SK-04353 Kosice, Slovakia
; Pohang Univ Sci & Technol, Dept Phys, Pohang 790784, South Korea
; Pohang Univ Sci & Technol, NVCRICS, Pohang 790784, South Korea
; CNRS, MPI, Grenoble High Magnet Field Lab, F-38042 Grenoble 9, France
; Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA
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