laboratoire de physique statistique
 
 
laboratoire de physique statistique

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CONTEMPORARY PHYSICS 


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2007
Supersolidity and superfluidity - Balibar, Sebastien
CONTEMPORARY PHYSICS 4831-39 (2007)

Abstract : Is it possible that a solid flows like a liquid, or even without friction like a superfluid? At first sight, the crystalline order in real space looks contradictory with the coherent motion which is responsible for superfluidity. However, several authors considered this possibility in 1969 - 1970, and experiments done by Kim and Chan in 2004 suggest that solid 4 He is indeed a superfluid solid - a `supersolid' - below about 100 mK. This article summarizes my present understanding of this paradoxical issue.