Materials science: Superdiffusion in solid helium

Robert W. Cahn ()
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Robert W. Cahn: University of Cambridge

Nature, 1999, vol. 400, issue 6744, 512-513

Abstract: Superfluidity is a characteristic of helium at low temperatures. When high pressures are used to produce solid helium, the mobility of atoms is found to be higher in the solid than in the melt. This superdiffusion occurs at the same temperature at which solid helium changes crystal structure and is linked to a reduction in shear resistance at this phase transformation.

Date: 1999
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DOI: 10.1038/22894

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