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



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ID: 7551.0, MPI für Festkörperforschung / FKF Publikationen 2002
de Haas-van Alphen oscillations in the quasi-two-dimensional organic conductor κ-(ET)2Cu(NCS)2: The magnetic breakdown approach
Authors:Gvozdikov, V. M.; Pershin, Y. V.; Steep, E.; Jansen, A. G. M.; Wyder, P.
Language:English
Date of Publication (YYYY-MM-DD):2002
Title of Journal:Physical Review B
Volume:65
Issue / Number:16
Sequence Number of Article:165102
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:We present both experimental data and an analytic theory for
the de Haas-van Alphen (dHvA) effect in the two-dimensional
organic single-crystal conductor kappa-(ET)(2)Cu(NCS)(2). We
show that the magnetization oscillation pattern and the fast
Fourier transform (FFT) spectrum of our measurements are well
described theoretically within the coherent magnetic breakdown
(MB) model for a two-dimensional Fermi surface consisting of
two open sheets and closed pockets connected by magnetic
breakdown centers. The spectrum of Landau quantized energy
levels changes substantially due to the MB. Landau bands
develop whose bandwidth and relative distance between them
oscillate in inverse magnetic field. These oscillations explain
the observed fine structure of the magnetization pattern at
fields above the MB field with the occurrence of "forbidden"
frequencies in the FFT spectrum.
External Publication Status:published
Document Type:Article
Communicated by:Michaela Asen-Palmer
Affiliations:MPI für Festkörperforschung
External Affiliations:; Kharkov AM Gorkii State Univ, Dept Phys, 4 Svobody Sq 4, UA-61077 Kharkov, Ukraine
; Max Planck Inst Festkorperforsch, Grenoble High Magnet Field Lab, F-38042 Grenoble 9, France
; CNRS, F-38042 Grenoble 9, France
; BI Verkin Inst Low Temp Phys & Engn, UA-61064 Kharkov, Ukraine
Identifiers:ISI:000175325000022
ISSN:0163-1829
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