Diagrammatic quantum Monte Carlo solution of the two-dimensional cooperon-fermion model

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Article number214516
Journal / PublicationPhysical Review B - Condensed Matter and Materials Physics
Volume83
Issue number21
Publication statusPublished - 15 Jun 2011
Externally publishedYes

Abstract

We investigate the two-dimensional cooperon-fermion model in the correlated regime with a continuous-time diagrammatic determinant quantum Monte Carlo algorithm. We estimate the transition temperature Tc, examine the effectively reduced band gap and cooperon mass, and find that delocalization of the cooperons enhances the diamagnetism. When applied to diamagnetism of the pseudogap phase in high-Tc cuprates, we obtain results in qualitative agreement with recent torque magnetization measurements. © 2011 American Physical Society.