Finite Doping Signatures of the Mott Transition in the Two-Dimensional Hubbard Model

TitreFinite Doping Signatures of the Mott Transition in the Two-Dimensional Hubbard Model
Type de publicationJournal Article
Nouvelles publications2010
AuteursSordi, G, Haule, K, Tremblay, A-MS
JournalPhysical Review Letters
Volume104
Pagination226401/1-4
Année de publication2010
Résumé

Experiments on layered materials call for a study of the influence of short-range spin correlations on the Mott transition. To this end, we solve the cellular dynamical mean-field equations for the Hubbard model on a plaquette with continuous-time quantum Monte Carlo calculations. The normal-state phase diagram as a function of temperature T, interaction strength U, and filling n reveals that upon increasing n towards the insulator, there is a surface of first-order transition between two metals at nonzero doping. For T above the critical end line there is a maximum in scattering rate.

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