Mott Transition between a Spin-Liquid Insulator and a Metal in Three Dimensions
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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-T lnln(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 Na[subscript 4]Ir[subscript 3]O[subscript 8] as a candidate to
test our predictions and compute its electron spectral function at the MIT.
Date issued
2009-05Department
Massachusetts Institute of Technology. Department of PhysicsJournal
Physical Review Letters
Publisher
American Physical Society
Citation
Podolsky, Daniel et al. “Mott Transition between a Spin-Liquid Insulator and a Metal in Three Dimensions.” Physical Review Letters 102.18 (2009): 186401. (C) 2010 The American Physical Society.
Version: Final published version
ISSN
0031-9007