%0 Journal Article
%T Mott Quantum Criticality in the Anisotropic 2D Hubbard Model
%A Benjamin Lenz
%A Salvatore R. Manmana
%A Thomas Pruschke
%A Fakher F. Assaad
%A Marcin Raczkowski
%J Physics
%D 2015
%I arXiv
%X We present evidence for Mott quantum criticality in an anisotropic two-dimensional system of coupled Hubbard chains at half-filling. In this scenario emerging from variational cluster approximation and cluster dynamical mean-field theory, the interchain hopping $t_{\perp}$ acts as control parameter driving the second-order critical endpoint $T_c$ of the metal-insulator transition down to zero at $t_{\perp}^{c}/t\simeq 0.2$. Below $t_{\perp}^{c}$ the volume of hole and electron Fermi pockets of a compensated metal vanishes continuously at the Mott transition. Above $t_{\perp}^{c}$ the volume reduction of the pockets is cut off by a first-order transition. We discuss the relevance of our findings to a putative quantum critical point in layered organic conductors whose location remains elusive so far.
%U http://arxiv.org/abs/1508.07886v1