skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Anomalous Heat and Momentum Transport Arising from Surface Roughness in a Normal {sup 3}He Slab

Abstract

I discuss heat and momentum transport in a mesoscopic film of {sup 3}He, 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.

Authors:
 [1]
  1. Indian Institute of Science, Department of Physics (India)
Publication Date:
OSTI Identifier:
22750021
Resource Type:
Journal Article
Journal Name:
Journal of Experimental and Theoretical Physics
Additional Journal Information:
Journal Volume: 126; Journal Issue: 2; Other Information: Copyright (c) 2018 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7761
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ELASTIC SCATTERING; FERMI GAS; FILMS; HELIUM 3; QUASI PARTICLES; ROUGHNESS; THERMAL CONDUCTIVITY

Citation Formats

Sharma, P., E-mail: shpriya@iisc.ac.in. Anomalous Heat and Momentum Transport Arising from Surface Roughness in a Normal {sup 3}He Slab. United States: N. p., 2018. Web. doi:10.1134/S1063776118020073.
Sharma, P., E-mail: shpriya@iisc.ac.in. Anomalous Heat and Momentum Transport Arising from Surface Roughness in a Normal {sup 3}He Slab. United States. doi:10.1134/S1063776118020073.
Sharma, P., E-mail: shpriya@iisc.ac.in. Thu . "Anomalous Heat and Momentum Transport Arising from Surface Roughness in a Normal {sup 3}He Slab". United States. doi:10.1134/S1063776118020073.
@article{osti_22750021,
title = {Anomalous Heat and Momentum Transport Arising from Surface Roughness in a Normal {sup 3}He Slab},
author = {Sharma, P., E-mail: shpriya@iisc.ac.in},
abstractNote = {I discuss heat and momentum transport in a mesoscopic film of {sup 3}He, 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.},
doi = {10.1134/S1063776118020073},
journal = {Journal of Experimental and Theoretical Physics},
issn = {1063-7761},
number = 2,
volume = 126,
place = {United States},
year = {2018},
month = {2}
}