Response of a mechanical oscillator in solid 4He

Ahlstrom, Sean and Bradley, Ian and Clovecko, Marcel and Guénault, Tony and Guise, Edward Ashley and Haley, Richard and Kolosov, Oleg and Kumar, Mukesh and McClintock, Peter V. E. and Pickett, George and Polturak, E. and Poole, Malcolm and Todoshchenko, Igor A. and Tsepelin, Viktor and Woods, Andrew (2014) Response of a mechanical oscillator in solid 4He. Journal of Low Temperature Physics, 175 (1-2). pp. 140-146. ISSN 0022-2291

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We present the first measurements of the response of a mechanical oscillator in solid 4He. We use a lithium niobate tuning fork operating in its fundamental resonance mode at a frequency of around 30 kHz. Measurements in solid 4He were performed close to the melting pressure. The tuning fork resonance shows substantial frequency shifts on cooling from around 1.5 K to below 10 mK. The response shows an abrupt change at the bcc-hcp transition. At low temperatures, below around 100 mK, the resonance splits into several overlapping resonances.

Item Type:
Journal Article
Journal or Publication Title:
Journal of Low Temperature Physics
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This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited.
Uncontrolled Keywords:
?? viscoelastic propertiessolid 4hetuning forkmaterials science(all)atomic and molecular physics, and opticscondensed matter physics ??
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Deposited On:
14 Oct 2013 12:10
Last Modified:
14 Jun 2024 23:56