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          Institute: MPI für Festkörperforschung     Collection: FKF Publikationen 2003     Display Documents



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ID: 7062.0, MPI für Festkörperforschung / FKF Publikationen 2003
Violation of Ioffe-Regel condition but saturation of resistivity of the high-Tc cuprates
Authors:Calandra, M.; Gunnarsson, O.
Language:English
Date of Publication (YYYY-MM-DD):2003
Title of Journal:Europhysics Letters
Volume:61
Issue / Number:1
Start Page:88
End Page:94
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:We demonstrate that the resistivity data of a number of high-T-
c cuprates, in particular La2-xSrxCuO4, are consistent with
resistivity saturation, although the Ioffe-Regel condition is
strongly violated. By using the f-sum rule together with
calculations of the kinetic energy in the t-J model, we show
that the saturation resistivity is unusually large. This is
related to the strong reduction of the kinetic energy due to
strong correlation effects. The fulfilment of the Ioffe-Regel
condition for conventional transition metal compounds is found
to be somewhat accidental.
External Publication Status:published
Document Type:Article
Communicated by:Michaela Asen-Palmer
Affiliations:MPI für Festkörperforschung
External Affiliations:; Max Planck Inst Festkorperforsch, D-70506 Stuttgart, Germany
Identifiers:ISI:000180069400014
ISSN:0295-5075
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