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- Title
Annealing Effect for Supersolid Fraction in <sup>4</sup>He.
- Authors
Andrey Penzev; Yoshinori Yasuta; Minoru Kubota
- Abstract
Abstract  We report on experimental confirmation of the non-classical rotational inertia (NCRI) in solid helium samples originally reported by Kim and Chan. The onset of NCRI was observed at temperatures below â400 mK. The ac velocity for initiation of the NCRI suppression is estimated to be â10 μm/sec. After an additional annealing of the sample at T=1.8 K for 12 hours, â¼10% relative increase of NCRI fraction was observed. Then after repeated annealing with the same conditions, the NCRI fraction was saturated. It differs from Reppyâs observation on a low pressure solid sample.
- Subjects
HELIUM at low temperatures; SOLID helium; SUPERFLUIDITY; QUANTUM statistics
- Publication
Journal of Low Temperature Physics, 2007, Vol 148, Issue 5/6, p677
- ISSN
0022-2291
- Publication type
Article
- DOI
10.1007/s10909-007-9452-4