Universality of liquid-gas mott transitions at finite temperatures

Stefanos Papanikolaou, Rafael M. Fernandes, Eduardo Fradkin, Philip W. Phillips, Joerg Schmalian, Rastko Sknepnek

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

We explain, in a consistent manner, the set of seemingly conflicting experiments on the finite temperature Mott critical point, and demonstrate that the Mott transition is in the Ising universality class. We show that, even though the thermodynamic behavior of the system near such critical point is described by an Ising order parameter, the global conductivity can depend on other singular observables and, in particular, on the energy density. Finally, we show that in the presence of weak disorder the dimensionality of the system has crucial effects on the size of the critical region that is probed experimentally.

Original languageEnglish (US)
Article number026408
JournalPhysical review letters
Volume100
Issue number2
DOIs
StatePublished - Jan 18 2008
Externally publishedYes

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