NDLI: On the Mobile Behavior of Solid $^{4}$He at High Temperatures

Content Provider	Springer Nature Link
Author	Eyal, A. Polturak, E.
Copyright Year	2011
Abstract	We report studies of solid helium contained inside a torsional oscillator, at temperatures between 1.07 K and 1.87 K. We grew single crystals inside the oscillator using commercially pure $^{4}$He and $^{3}$He-$^{4}$He mixtures containing 100 ppm $^{3}$He. Crystals were grown at constant temperature and pressure on the melting curve. At the end of the growth, the crystals were disordered, following which they partially decoupled from the oscillator. The fraction of the decoupled He mass was temperature and velocity dependent. Around 1 K, the decoupled mass fraction for crystals grown from the mixture reached a limiting value of around 35%. In the case of crystals grown using commercially pure $^{4}$He at temperatures below 1.3 K, this fraction was much smaller. This difference could possibly be associated with the roughening transition at the solid-liquid interface.
Starting Page	262
Ending Page	274
Page Count	13
File Format	PDF
ISSN	00222291
Journal	Journal of Low Temperature Physics
Volume Number	163
Issue Number	5-6
e-ISSN	15737357
Language	English
Publisher	Springer US
Publisher Date	2011-03-02
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Solid helium Supersolids Disorder Characterization and Evaluation of Materials Condensed Matter Physics Magnetism, Magnetic Materials
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Materials Science

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