Non-Fermi Liquid Behaviour in the Three Dimensional Hubbard Model

Autor:	Kellar, Samuel, Tam, Ka-Ming
Rok vydání:	2020
Předmět:	Condensed Matter - Strongly Correlated Electrons Condensed Matter - Superconductivity
Druh dokumentu:	Working Paper
Popis:	We present a numerical study on non-Fermi liquid behaviour of a three dimensional system. The Hubbard model in a cubic lattice is simulated by the dynamical cluster approximation, in particular the quasi-particle weight is calculated at finite dopings for a range of temperatures. Near the putative quantum critical point, we find evidence of a separatrix at a finite doping which separates the Fermi liquid from non-Fermi liquid as the doping increases. Our results suggest that a marginal Fermi liquid and possibly a quantum critical point should exist in the three dimensions interacting Fermi system. Comment: 5 pages, 3 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2008.12324 Zobrazit plný text záznamu View this record from Arxiv