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



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ID: 7541.0, MPI für Festkörperforschung / FKF Publikationen 2002
Superconducting fluctuation effect on the de Haas-van Alphen oscillations in the vortex liquid state of quasi-2D superconductors
Authors:Maniv, T.; Zhuravlev, V.; Vagner, I. D.; Wyder, P.
Language:English
Date of Publication (YYYY-MM-DD):2002
Title of Journal:Physica B
Volume:315
Issue / Number:1-3
Start Page:47
End Page:55
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:The damping of the de Haas-van Alphen (dHvA) oscillations in
the mixed state of a 2D superconductor is studied within a new
analytical approach to the problem of vortex-lattice
fluctuations at high magnetic fields. It is shown that in the
'liquid' state around mean field H-e2(T), averaging over phase
fluctuations leads to damping of the dHvA osillations, which
can be well described by the random vortex lattice model. The
calculated damping rate is in a good quantitative agreement
with recent experiments carried out on a quasi-2D organic
superconductor. It is predicted that deep in the mixed state,
the freezing into an ordered vortex lattice is accompanied by a
sharp upward turn in the slope of the 'Dingle plot'. (C) 2002
Elsevier Science B.V. All rights reserved.
Free Keywords:de Haas-van Alphen effect; organic superconductors;
superconducting fluctuations; vortex lattice melting
External Publication Status:published
Document Type:Article
Communicated by:Michaela Asen-Palmer
Affiliations:MPI für Festkörperforschung
External Affiliations:; Technion Israel Inst Technol, Dept Chem, IL-32000 Haifa, Israel
; Max Planck Inst Festkorperforsch, Grenoble High Magnet Field Lab, Grenoble 9, France
Identifiers:ISI:000176076000006
ISSN:0921-4526
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