2007/02/27 by A. Penzev, Andrey Penzev, Yoshinori Yasuta +3 · 101 citations
Chemistry · Earth and Planetary Sciences · Physics and Astronomy · #Advanced Physical and Chemical Molecular Interactions #Annealing (glass) #Cold Fusion and Nuclear Reactions #Fraction (chemistry) #Helium #Helium-4 #Moment of inertia #Quantum, superfluid, helium dynamics #Supersolid #cond-mat.other
paper · pdf · doi:10.1007/s10909-007-9452-4
published in Journal of Low Temperature Physics 148(5-6), 677-681 (Springer Science+Business Media) · to be published in J. of Low Temp. Phys. (QFS2006 proceedings)
arxiv created 2007/02/27 · openalex publication_date 2007/06/06 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
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 ~400 mK. The ac velocity for initiation of the NCRI suppression is estimated to be ~10 μm/sec. After an additional annealing of the sample at T= 1.8 K for 12 hours, ~ 10% relative increase of NCRI fraction was observed. Then after repeated annealing with the same conditions, the NCRI fraction was saturated. It differs from Reppy's observation on a low pressure solid sample.