Document Detail


Magnetic phase diagrams of classical triangular and kagome antiferromagnets.
MedLine Citation:
PMID:  21471626     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
We investigate the effect of geometrical frustration on the H-T phase diagrams of the classical Heisenberg antiferromagnets on triangular and kagome lattices. The phase diagrams for the two models are obtained from large-scale Monte Carlo simulations. For the kagome antiferromagnet, thermal fluctuations are unable to lift degeneracy completely and stabilize translationally disordered multipolar phases. We find a substantial difference in the temperature scales of the order by disorder effect related to different degeneracy of the low- and the high-field classical ground states in the kagome antiferromagnet. In the low-field regime, the Kosterlitz-Thouless transition into a spin-nematic phase is produced by unbinding of half-quantum vortices.
Authors:
M V Gvozdikova; P-E Melchy; M E Zhitomirsky
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Publication Detail:
Type:  Journal Article     Date:  2011-04-06
Journal Detail:
Title:  Journal of physics. Condensed matter : an Institute of Physics journal     Volume:  23     ISSN:  1361-648X     ISO Abbreviation:  J Phys Condens Matter     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-04-07     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101165248     Medline TA:  J Phys Condens Matter     Country:  England    
Other Details:
Languages:  eng     Pagination:  164209     Citation Subset:  IM    
Affiliation:
Department of Physics, Kharkov National University, 61077 Kharkov, Ukraine.
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