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dc.contributor.authorLauter, Hans
dc.contributor.authorApaja, Vesa
dc.contributor.authorKalinin, I.
dc.contributor.authorKats, E.
dc.contributor.authorKoza, M.
dc.contributor.authorKrotscheck, E.
dc.contributor.authorLauter, V.V.
dc.contributor.authorPuchkov, A.V.
dc.date.accessioned2017-06-02T06:12:25Z
dc.date.available2017-06-02T06:12:25Z
dc.date.issued2011
dc.identifier.citationLauter, H., Apaja, V., Kalinin, I., Kats, E., Koza, M., Krotscheck, E., . . . , & Puchkov, A. V. (2011). Observation of a superfluid component within solid helium. <em>Physical Review Letters</em>, 107 (26), 4. <a href="https://doi.org/10.1103/PhysRevLett.107.265301">doi:10.1103/PhysRevLett.107.265301</a>
dc.identifier.otherTUTKAID_50249
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/54260
dc.description.abstractWe demonstrate by neutron scattering that a localized superfluid component exists at high pressures within solid helium in aerogel. Its existence is deduced from the observation of two sharp phonon-roton spectra which are clearly distinguishable from modes in bulk superfluid helium. These roton excitations exhibit different roton gap parameters than the roton observed in the bulk fluid at freezing pressure. One of the roton modes disappears after annealing the samples. Comparison with theoretical calculations suggests that the model that reproduces the observed data best is that of superfluid double layers within the solid and at the helium-substrate interface.
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.relation.ispartofseriesPhysical Review Letters
dc.relation.urihttp://link.aps.org/doi/10.1103/PhysRevLett.107.265301
dc.subject.otherRajatut geometriat
dc.subject.othersupranestnosyys 4He kiteessä
dc.subject.othersuprakide 4He
dc.subject.otherRestricted geometries
dc.subject.otherSuperfluidity in solid 4He
dc.subject.othersupersolid 4He
dc.titleObservation of a superfluid component within solid helium
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201705242482
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.contributor.oppiaineFysiikka
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2017-05-24T09:15:14Z
dc.type.coarjournal article
dc.description.reviewstatuspeerReviewed
dc.format.pagerange4
dc.relation.issn1079-7114
dc.relation.volume107
dc.type.versionpublishedVersion
dc.rights.copyright© 2011 American Physical Society. Published in this repository with the kind permission of the publisher.
dc.rights.accesslevelopenAccessfi
dc.relation.doi10.1103/PhysRevLett.107.265301


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