Mott transition between a spin-liquid insulator and a metal in three dimensions.
We study a bandwidth controlled Mott metal-insulator transition (MIT) from a Fermi-liquid metal to a quantum spin-liquid insulator in three dimensions. Using a slave rotor approach including gauge fluctuations, we obtain a continuous MIT and discuss finite temperature crossovers in its vicinity. We show that the specific heat C approximately Tlnln(1/T) at the MIT and that the metallic state near the MIT should exhibit a "conductivity minimum" as a function of temperature. We suggest Na4Ir3O8 as a candidate to test our predictions and compute its electron spectral function at the MIT.
Podolsky
Daniel
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Department of Physics, University of Toronto, Toronto, Ontario M5S 1A7, Canada.
Paramekanti
Arun
A
Kim
Yong Baek
YB
Senthil
T
T