Abstract
I discuss heat and momentum transport in a mesoscopic film of 3He, confined by rough walls in the normal Fermi liquid state. Inelastic binary quasiparticle scattering mediated by elastic scattering from the surface roughness gives rise to a coherent “mixed” scattering channel that drives anomalous transport over a range of temperature. I calculate the thermal conductivity and viscosity of the film in this regime and derive these in terms of the film thickness and autocorrelation function of the surface roughness, which enters the formulation as an independent input. This calculation can be useful in understanding and isolating the effects of confinement and surface roughness, especially in the context of exploring the superfluid state in the film.
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Published in Russian in Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2018, Vol. 153, No. 2, pp. 240–250.
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Sharma, P. Anomalous Heat and Momentum Transport Arising from Surface Roughness in a Normal 3He Slab. J. Exp. Theor. Phys. 126, 201–209 (2018). https://doi.org/10.1134/S1063776118020073
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DOI: https://doi.org/10.1134/S1063776118020073