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Author Vidhyadhiraja, N. S. ♦ Macridin, A. ♦ Sen, C. ♦ Jarrell, M. ♦ Ma, Michael
Source arXiv.org
Content type Text
File Format PDF
Date of Submission 2008-09-08
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Natural sciences & mathematics ♦ Physics
Subject Keyword Condensed Matter - Strongly Correlated Electrons ♦ Condensed Matter - Superconductivity ♦ physics:cond-mat
Abstract We explore the Matsubara quasiparticle fraction and the pseudogap of the two-dimensional Hubbard model with the dynamical cluster quantum Monte Carlo method. The character of the quasiparticle fraction changes from non-Fermi liquid, to marginal Fermi liquid to Fermi liquid as a function of doping, indicating the presence of a quantum critical point separating non-Fermi liquid from Fermi liquid character. Marginal Fermi liquid character is found at low temperatures at a very narrow range of doping where the single-particle density of states is also symmetric. At higher doping the character of the quasiparticle fraction is seen to cross over from Fermi Liquid to Marginal Fermi liquid as the temperature increases.
Educational Use Research
Learning Resource Type Article
Page Count 5


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