Annealing Effect for Supersolid Fraction in 4He
Annealing Effect for Supersolid Fraction in 4He
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DOI：
10.1007/s10909-007-9452-4
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发表时间：
2007-02
影响因子：
2
通讯作者：
A. Penzev;Y. Yasuta;M. Kubota
中科院分区：
文献类型：
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作者：
A. Penzev;Y. Yasuta;M. Kubota
我们报告的非经典转动惯量（NCRI）在固体氦样品最初报告的金和陈的实验确认。NCRI的发病观察到的温度低于400 mK。开始NCRI抑制的交流速度估计约为10 μm/秒。在T = 1.8K下再退火12小时后，观察到NCRI分数相对增加约10%。然后在相同条件下重复退火后，NCRI级分饱和。它不同于雷比对低压固体样品的观察。
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 atT=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.