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Superfluid Interfaces in Quantum Solids

Burovski, Evgeni and Kozik, Evgeny and Kuklov, Anatoly and Prokof'ev, Nikolay and Svistunov, Boris (2005) Superfluid Interfaces in Quantum Solids. Physical Review Letters, 94 (16). ISSN 1079-7114

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    Abstract

    One scenario for the nonclassical moment of inertia of solid 4He discovered by Kim and Chan [ Nature (London) 427 225 (2004)] is the superfluidity of microcrystallite interfaces. On the basis of the most simple model of a quantum crystal—the checkerboard lattice solid—we show that the superfluidity of interfaces between solid domains can exist in a wide range of parameters. At strong enough interparticle interaction, a superfluid interface becomes an insulator via a quantum phase transition. Under the conditions of particle-hole symmetry, the transition is of the standard U(1) universality class in 3D, while in 2D the onset of superfluidity is accompanied by the interface roughening, driven by fractionally charged topological excitations.

    Item Type: Article
    Journal or Publication Title: Physical Review Letters
    Additional Information: © 2005 The American Physical Society
    Subjects:
    Departments: Faculty of Science and Technology > Physics
    ID Code: 61740
    Deposited By: ep_importer_pure
    Deposited On: 27 Feb 2013 16:44
    Refereed?: Yes
    Published?: Published
    Last Modified: 25 Nov 2017 04:55
    Identification Number:
    URI: http://eprints.lancs.ac.uk/id/eprint/61740

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