Quantum-Slip Effect on the Viscosity of Superfluid <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">He</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>3</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span>-<span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>B</mi></math></span> at Very Low Temperatures

D. Einzel; P. Wölfle; H. Højgaard Jensen; H. Smith

doi:10.1103/PhysRevLett.52.1705

Quantum-Slip Effect on the Viscosity of Superfluid ${}^{3}{He}$ - $B$ at Very Low Temperatures

D. Einzel, P. Wölfle, H. Højgaard Jensen, and H. Smith

Phys. Rev. Lett. 52, 1705 – Published 7 May 1984

Abstract

We demonstrate that the flow of excitations in superfluid ${}^{3}{He}$ in restricted geometries is strongly influenced by Andreev scattering at very low temperatures. The effective viscosity is calculated in a simple model and shown to agree with the one observed in a torsional-oscillator experiment.

Received 21 February 1984

DOI:https://doi.org/10.1103/PhysRevLett.52.1705

Authors & Affiliations

D. Einzel^* and P. Wölfle^†

Physik Department, Technische Universität München, Garching, West Germany

H. Højgaard Jensen and H. Smith

Physics Laboratory I, H. C. Ørsted Institute, Copenhagen, Denmark

^*Present address: Walther-Meissner-Institut für Tieftemperaturforschung, D-8046 Garching, West Germany.
^†Also at Max-Planck-Institut für Physik und Astrophysik, D-8000 München, West Germany.