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Please use this identifier to cite or link to this item: http://repository.li.mahidol.ac.th/dspace/handle/123456789/18009
Title: Bond and site defects in fully frustrated two-dimensional Ising systems
Authors: J. R. Gonçalves
J. Poulter
J. A. Blackman
University of Reading
Mahidol University
Keywords: Mathematics;Physics and Astronomy
Issue Date: 7-May-1997
Citation: Journal of Physics A: Mathematical and General. Vol.30, No.9 (1997), 2947-2962
Abstract: The Villain model and the triangular antiferromagnet are the two canonical fully frustrated two-dimensional Ising systems. Exact results are presented for the entropy changes that occur when bond and site defects are introduced into these systems. The results for single defects are obtained first. Pairs of site defects are then discussed. The change in entropy is evaluated to the leading term in an expansion in powers of R -1 where R is the separation of the defects. The entropy shift is ∼ R -2 in both models except for special values of R in the Villain model where it is ∼ R -4.
URI: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0040092366&origin=inward
http://repository.li.mahidol.ac.th/dspace/handle/123456789/18009
ISSN: 03054470
Appears in Collections:Scopus 1991-2000

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