Observation of a superfluid component within solid helium
Lauter, H., Apaja, V., Kalinin, I., Kats, E., Koza, M., Krotscheck, E., Lauter, V.V., & Puchkov, A.V. (2011). Observation of a superfluid component within solid helium. Physical Review Letters, 107(26), 4. https://doi.org/10.1103/PhysRevLett.107.265301
Julkaistu sarjassa
Physical Review LettersPäivämäärä
2011Tekijänoikeudet
© 2011 American Physical Society. Published in this repository with the kind permission of the publisher.
We 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.
Julkaisija
American Physical SocietyISSN Hae Julkaisufoorumista
1079-7114Asiasanat
Alkuperäislähde
http://link.aps.org/doi/10.1103/PhysRevLett.107.265301Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/21382816
Metadata
Näytä kaikki kuvailutiedotKokoelmat
Samankaltainen aineisto
Näytetään aineistoja, joilla on samankaltainen nimeke tai asiasanat.
-
Interweaving of elementary modes of excitation in superfluid nuclei through particle-vibration coupling: Quantitative account of the variety of nuclear structure observables
Idini, Andrea; Potel, G.; Barranco, F.; Vigezzi, E.; Broglia, R. A. (American Physical Society, 2015)A complete characterization of the structure of nuclei can be obtained by combining information arising from inelastic scattering, Coulomb excitation, and γ -decay, together with one- and two-particle transfer reactions. ... -
Compromises in L.M. Montgomery's Anne-serial : literary freedom within the restrictions of Victorian society
Ahonen, Anna Leena (2001) -
In vivo localized gastrocnemius subtendon representation within the healthy and ruptured human Achilles tendon
Khair, Raad M.; Stenroth, Lauri; Cronin, Neil J.; Reito, Aleksi; Paloneva, Juha; Finni, Taija (American Physiological Society, 2022)The Achilles tendon (AT) is composed of three distinct in-series elastic subtendons, arising from different muscles in the triceps surae. Independent activation of any of these muscles is thought to induce sliding between ... -
Three-dimensional splitting dynamics of giant vortices in Bose-Einstein condensates
Räbinä, Jukka; Kuopanportti, Pekko; Kivioja, Markus; Möttönen, Mikko; Rossi, Tuomo (American Physical Society, 2018)We study the splitting dynamics of giant vortices in dilute Bose-Einstein condensates by numerically integrating the three-dimensional Gross-Pitaevskii equation in time. By taking advantage of tetrahedral tiling in the ...
Ellei toisin mainittu, julkisesti saatavilla olevia JYX-metatietoja (poislukien tiivistelmät) saa vapaasti uudelleenkäyttää CC0-lisenssillä.