TY - JOUR
T1 - Universality class of the Mott transition
AU - Abdel-Jawad, M.
AU - Kato, R.
AU - Watanabe, I.
AU - Tajima, N.
AU - Ishii, Y.
N1 - Publisher Copyright:
© 2015 American Physical Society.
PY - 2015/3/11
Y1 - 2015/3/11
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevLett.114.106401
DO - 10.1103/PhysRevLett.114.106401
M3 - Article
AN - SCOPUS:84925427985
VL - 114
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 10
M1 - 106401
ER -