Universality class of the Mott transition

M. Abdel-Jawad, R. Kato, I. Watanabe, N. Tajima, Y. Ishii

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


Pressure dependence of the conductivity and thermoelectric power is measured through the Mott transition in the layer organic conductor EtMe3P[Pd(dmit)2]2. The critical behavior of the thermoelectric effect provides a clear and objective determination of the Mott-Hubbard transition during the isothermal pressure sweep. Above the critical end point, the metal-insulator crossing, determined by the thermoelectric effect minimum value, is not found to coincide with the maximum of the derivative of the conductivity as a function of pressure. We show that the critical exponents of the Mott-Hubbard transition fall within the Ising universality class regardless of the dimensionality of the system.

Original languageEnglish
Article number106401
JournalPhysical Review Letters
Issue number10
Publication statusPublished - 2015 Mar 11

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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