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Magnetothermoelectric Response at a Superfluid--Mott Insulator Transition

M. J. Bhaseen·A. G. Green·S. L. Sondhi
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Abstract

We investigate the finite temperature magnetothermoelectric response in the vicinity of a superfluid--Mott insulator quantum phase transition. We focus on the particle-hole symmetric transitions of the Bose--Hubbard model, and combine Lorentz invariance arguments with quantum Boltzmann calculations. By means of an epsilon expansion, we find that a non-vanishing thermoelectric tensor and a finite thermal conductivity are supported in this quantum critical regime. We comment on the singular Nernst effect in this problem.

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M. J. Bhaseen, A. G. Green, S. L. Sondhi. 2006-10-25. Magnetothermoelectric Response at a Superfluid--Mott Insulator Transition. https://doi.org/10.1103/physrevlett.98.179901

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