Universality and Critical Behavior at the Mott Transition

• DOI: 10.1126/science.1088386
• Publication Date: 2003-10-02T20:43:16Z
• Authors: P. Limelette; A. Georges; D. Jérome; P. Wzietek; P. Metcalf; J. M. Honig
• Keywords: Condensed Matter - Strongly Correlated Electrons; Strongly Correlated Electrons (cond-mat.str-el); 0103 physical sciences; [PHYS.COND.CM-SCE] Physics [physics]/Condensed Matter [cond-mat]/Strongly Correlated Electrons [cond-mat.str-el]; FOS: Physical sciences; 01 natural sciences

We report conductivity measurements of Cr-doped V 2 O 3 using a variable pressure technique. The critical behavior of the conductivity near the Mott insulator to metal critical endpoint is investigated in detail as a function of pressure and temperature. The critical exponents are determined, as well as the scaling function associated with the equation of state. The universal properties of a liquid-gas transition are found. This is potentially a generic description of the Mott critical endpoint in correlated electron materials.