Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2007-10-08
Phys. Rev. Lett. 100, 026408 (2008)
Physics
Condensed Matter
Strongly Correlated Electrons
4 pages, 3 figures
Scientific paper
10.1103/PhysRevLett.100.026408
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.
Fernandes Rafael Monteiro
Fradkin Eduardo
Papanikolaou Stefanos
Phillips Philip W.
Schmalian Joerg
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