Universality and critical behavior at the Mott transition.
We report conductivity measurements of Cr-doped V2O3 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.
Limelette
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P
Laboratoire de Physique des Solides (CNRS, U.R.A. 8502), Bâtiment 510, Université de Paris-Sud, 91405 Orsay, France. limelette@lps.u-psud.fr
Georges
A
A
Jérome
D
D
Wzietek
P
P
Metcalf
P
P
Honig
J M
JM