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Non-linear mechanical response of the a-like phase of superfluid He-3 in aerogel.

Bradley, D. Ian and Fisher, Shaun N. and Guénault, A.M. and Haley, Richard P. and Pickett, George R. and Roberts, John Edward and O'Sullivan, Samantha and Tsepelin, Viktor (2007) Non-linear mechanical response of the a-like phase of superfluid He-3 in aerogel. Journal of Low Temperature Physics, 148 (5-6). pp. 603-607. ISSN 0022-2291

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Abstract

We present measurements of the response of the A-like phase of superfluid He-3 in aerogel to an applied flow. The measurements are made using a cylindrical piece of 98% silica aerogel attached to a vibrating wire resonator. The resonator is immersed in superfluid He-3 at low temperatures and relatively high magnetic fields such that the aerogel confined superfluid is in the A-like phase, while the surrounding fluid is in the bulk B-phase. We observe a variety of interesting non-linear and hysteretic effects when the resonator is driven to higher velocities. We present some of our preliminary findings and speculate on their implications.

Item Type: Article
Journal or Publication Title: Journal of Low Temperature Physics
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 23473
Deposited By: Dr Richard P. Haley
Deposited On: 23 Jan 2009 14:21
Refereed?: Yes
Published?: Published
Last Modified: 09 Apr 2014 20:27
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/23473

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