Suppression of superfluid density in the superfluid-supersolid transition

Details Suppression of superfluid density in the superfluid-supersolid transition Suppression of superfluid density in the superfluid-supersolid transition

2005-09-16

arxiv.org/abs/cond-mat/0509428v3

Physics

Condensed Matter

Statistical Mechanics

7 pages

Scientific paper

We show that the rather unexpected pressure dependence of superfluid density observed near the superfluid-supersolid transition by Kim {\em et.al.}[M.H.W. Chan, {\em private communication}], can be understood if the transition from superfluid to supersolid state is a second order or weakly first order transition from the superfluid state to a super-CDW state with non-uniform Bose-condensation amplitude. The suppression of superfluid density is a direct consequence of softening of phonon mode at finite wave-vector $|\vec{Q}|\sim Q_0$ around the quantum phase transition.

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