Groupe de Physique Statistique

Equipe 106, Institut Jean Lamour

                     
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Séminaire de groupe

Thermoelectric transport of ultracold fermionic atoms
Charles Grenier
CPT Ecole Polytechnique
jeudi 17 janvier 2013 , 10h25
Salle de séminaire du groupe de Physique Statistique

We make a proposal for revealing thermoelectric effects in the transport properties of ultracold fermionic atom, using the setup recently realized in the ETH group [1]. This setup consists in two reservoirs connected by a conducting channel. We present a theoretical analysis of the expected effects, and emphasize that an intrinsic thermoelectric effect due to the finite dilatation coefficient of the gas in the reservoirs arises in the context of atomic gases. This effect combines with the thermoelectric properties of the conduction channel to give rise to the total off-diagonal transport properties of the system. We propose an experimental protocol which directly probes the thermoelectric response and off-diagonal transport coefficients. The expected magnitude of the effects should make it possible to observe them in currently available experimental setups. [1] J.-P. Brantut, et al., Science (2012) [2] Ch. Grenier, C. Kollath & A. Georges, « Thermal and thermoelectric transport of ultracold fermions », arxiv preprint 1209.3942

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