Observation of superflow in solid helium

被引：597

作者：

Kim, E ^{[1
]}

Chan, MHW ^{[1
]}

机构：

[1] Penn State Univ, Dept Phys, University Pk, PA 16802 USA

来源：

SCIENCE | 2004年 / 305卷 / 5692期

关键词：

D O I：

10.1126/science.1101501

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We report on the observation of nonclassical rotational inertia in solid helium-4 confined to an annular channel in a sample cell under torsional motion, demonstrating superfluid behavior. The effect shows up as a drop in the resonant oscillation period as the sample cell is cooled below 230 millikelvin. Measurement of 17 solid samples allows us to map out the boundary of this superfluid-like solid or supersotid phase from the melting tine up to 66 bars. This experiment indicates that superfluid behavior is found in all. three phases of matter.

引用

页码：1941 / 1944

页数：4

共 34 条

[1] Flow of liquid helium II [J].