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Signatures of the Mott transition in the antiferromagnetic state of the two-dimensional Hubbard model

2017; American Physical Society; Volume: 95; Issue: 23 Linguagem: Inglês

10.1103/physrevb.95.235109

2469-9977

Lorenzo Fratino, P. Sémon, M. Charlebois, G. Sordi, A.–M. S. Tremblay,

Quantum many-body systems

The properties of a phase with large correlation length can be strongly influenced by the underlying normal phase. We illustrate this by studying the half-filled two-dimensional Hubbard model using cellular dynamical mean-field theory with continuous-time quantum Monte Carlo. Sharp crossovers in the mechanism that favors antiferromagnetic correlations and in the corresponding local density of states are observed. These crossovers occur at values of the interaction strength $U$ and temperature $T$ that are controlled by the underlying normal-state Mott transition.