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Equilibrium shape of rotating helium crystals

โœ Scribed by A.Ya. Parshin

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
527 KB
Volume
210
Category
Article
ISSN
0921-4526

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โœฆ Synopsis

We have studied theoretically the effects of rotation on the equilibrium shape of the interface between superfluid and solid helium. Surface structures in the shape of hillocks and ridges appear in the presence of a vortex lattice in the superfluid. These structures are very sensitive to the orientation of the interface boundary with respect to the crystal planes when surface stiffness is very anisotropic, as occurs well below the roughening transition. We predict the appearance of ring shaped facets for fast rotation speeds. These effects should be observable by using optical techniques.

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