Fate of Vacancy-Induced Supersolidity inHe<mml:mprescripts/><mml:none/>4

2006/05/31 by Massimo Boninsegni, Anatoly Kuklov, Lode Pollet +4 · 5 citations
Earth and Planetary Sciences · Physics and Astronomy · #Atomic and Subatomic Physics Research #High-pressure geophysics and materials #Quantum, superfluid, helium dynamics #cond-mat.other

paper · pdf · doi:10.1103/physrevlett.97.080401

published as Phys. Rev. Lett. 97, 080401 (2006) · 4 pages,4 figures. Replaced with published version

openalex publication_date 2006/08/22 · arxiv created 2006/08/26 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/03

Abstract

The supersolid state of matter, exhibiting nondissipative flow in solids, has been elusive for 35 years. The recent discovery of a nonclassical moment of inertia in solid 4He by Kim and Chan provided the first experimental evidence, although the interpretation in terms of supersolidity of the ideal crystal phase remains a subject to debate. Using quantum Monte Carlo methods we investigate the long-standing question of vacancy-induced superflow and find that vacancies in a 4He crystal phase separate instead of forming a supersolid. On the other hand, nonequilibrium vacancies relaxing on defects of polycrystalline samples could provide an explanation for the experimental observations.

Citations

• Ring Exchanges and the Supersolid Phase ofHe<mml:mprescripts/><mml:none/>4

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