Please use this identifier to cite or link to this item: http://elar.urfu.ru/handle/10995/111529
Title: Critical Properties of the Half-filled Hubbard Model in Three Dimensions
Authors: Rohringer, G.
Toschi, A.
Katanin, A.
Held, K.
Issue Date: 2011
Publisher: American Physical Society (APS)
Citation: Critical Properties of the Half-filled Hubbard Model in Three Dimensions / G. Rohringer, A. Toschi, A. Katanin et al. // Physical Review Letters. — 2011. — Vol. 107. — Iss. 25. — 256402.
Abstract: By means of the dynamical vertex approximation (DΓA) we include spatial correlations on all length scales beyond the dynamical mean-field theory (DMFT) for the half-filled Hubbard model in three dimensions. The most relevant changes due to nonlocal fluctuations are (i) a deviation from the mean-field critical behavior with the same critical exponents as for the three dimensional Heisenberg (anti)ferromagnet and (ii) a sizable reduction of the Néel temperature (T N) by ∼30% for the onset of antiferromagnetic order. Finally, we give a quantitative estimate of the deviation of the spectra between DΓA and DMFT in different regions of the phase diagram. © 2011 American Physical Society.
Keywords: ANTIFERROMAGNETIC ORDERS
CRITICAL BEHAVIOR
CRITICAL EXPONENT
CRITICAL PROPERTIES
DYNAMICAL MEAN-FIELD THEORY
FERROMAGNETS
HEISENBERG
LENGTH SCALE
MEAN-FIELD
NON-LOCAL FLUCTUATIONS
QUANTITATIVE ESTIMATES
SPATIAL CORRELATIONS
THREE DIMENSIONS
ANTIFERROMAGNETISM
MEAN FIELD THEORY
PHASE DIAGRAMS
HUBBARD MODEL
URI: http://elar.urfu.ru/handle/10995/111529
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 83655191156
WOS ID: 000298132800015
PURE ID: 37900486
ISSN: 0031-9007
metadata.dc.description.sponsorship: We thank E. Gull and S. Fuchs for discussions and exchanging data. We acknowledge financial support from the EU-India network MONAMI (G. R.), Austria-Russia FWF project I 610-N16 (A. T.), RFBR Grants No. 10-02-91003-ANF_a, No. 11-02-00937-a, and Max-Planck associated partner group (A. K.), and FWF SFB ViCoM F4103-N13 (K. H.). Calculations were done on the Vienna Scientific Cluster.
Appears in Collections:Научные публикации ученых УрФУ, проиндексированные в SCOPUS и WoS CC

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