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arXiv · 2103.16925

Possible Nonlinear Anomalous Thermoelectric Effect in Organic Massive Dirac Fermion System

Toshihito Osada·Andhika Kiswandhi
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Abstract

We propose a novel current-induced thermoelectric phenomenon, the nonlinear anomalous Ettingshausen effect (AEE), at zero magnetic field in inversion-asymmetric conductors. As an example, we discuss the weak charge ordering state in a layered organic conductor alpha-(BEDT-TTF)2I3, which is a two-dimensional massive Dirac fermion system with a pair of tilted Dirac cones. The nonlinear AEE is a thermoelectric analogue of the nonlinear anomalous Hall effect, which is recently observed in alpha-(BEDT-TTF)2I3, and these two effects generally appear simultaneously. The nonlinear AEE generates a transverse heat current, which exhibits rectifying characteristics, namely unidirectionality even under an AC current.

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Toshihito Osada, Andhika Kiswandhi. 2021-03-31. Possible Nonlinear Anomalous Thermoelectric Effect in Organic Massive Dirac Fermion System. https://doi.org/10.7566/jpsj.90.053704

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