Universality and Critical Behavior at the Mott transition

A.Georges; D.Jerome; J.M.Honig; P.Limelette; P.Metcalf; P.Wzietek

Universality and Critical Behavior at the Mott transition

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arxiv cond-mat/0406351 v1 pith:TYFXMEAG submitted 2004-06-16 cond-mat.str-el

P.Limelette , A.Georges , D.Jerome , P.Wzietek , P.Metcalf , J.M.Honig This is my paper

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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.

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Resilient cluster Mott states in layered Nb$_3$Cl$_8$ against pressure-induced symmetry breaking
cond-mat.str-el 2025-07 conditional novelty 5.0 of 10

Pressure lowers the symmetry of the Nb3 trimer in Nb3Cl8, widens the bands, and shrinks the cluster Mott gap from 1.0 eV to 0.58 eV in bulk, without destroying the insulating state.

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