Squeezing Superfluid from a Stone: Coupling Superfluidity and Elasticity in a Supersolid
Squeezing Superfluid from a Stone: Coupling Superfluidity and Elasticity in a Supersolid
Starting from the assumption that the normal solid to supersolid (NS-SS) phase transition is continuous, we develop a phenomenological Landau theory of the transition in which superfluidity is coupled to the elasticity of the crystalline lattice. We find that the elasticity does not affect the universal properties of the superfluid …