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Nature 444, 693-695 (7 December 2006) | doi:10.1038/444693a; Published online 6 December 2006
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Condensed-matter physics: Defects and perfect flows
Henry R. Glyde1
Abstract
The discovery that parts of a solid helium crystal could flow through other parts without friction ignited physicists' interest. Independent experiments confirm this unusual superflow, but its origin remains mysterious.
In 2004, Kim and Chan reported the spectacular, and controversial, observation of superfluidity — flow without resistance from frictional forces — in crystalline helium1, 2. This remarkable finding has now been confirmed3, 4, 5, 6.
- Henry R. Glyde is in the Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA.
Email: glyde@udel.edu
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