First-principles study of anomalous Nernst effect in half-metallic iron dichloride monolayer

We performed first-principles simulations to elucidate the transverse thermoelectric effect (anomalous Nernst effect) of the half-metallic FeCl2 monolayer. We analyzed its thermoelectricity based on the semiclassical transport theory including the effect of Berry curvature and found that carrier-dop...

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Bibliographic Details
Published in:APL materials 2020-04, Vol.8 (4), p.041105-041105-6
Main Authors: Syariati, Rifky, Minami, Susumu, Sawahata, Hikaru, Ishii, Fumiyuki
Format: Article
Language:English
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Summary:We performed first-principles simulations to elucidate the transverse thermoelectric effect (anomalous Nernst effect) of the half-metallic FeCl2 monolayer. We analyzed its thermoelectricity based on the semiclassical transport theory including the effect of Berry curvature and found that carrier-doping induced a large anomalous Nernst effect that was ∼6.65 μV/K at 100 K if we assumed 10 fs for the relaxation time. This magnitude originates in a large Berry curvature at the K-point of a hexagonal Brillouin zone. These results suggest that two-dimensional ferromagnetic half-metallic materials can potentially be used in thermoelectric devices.
ISSN:2166-532X
2166-532X
DOI:10.1063/1.5143474