Superfluid vortex front at T -> 0: decoupling from the reference frame

J.J. Hosio, V.B. Eltsov, R. de Graaf, P.J. Heikkinen, R. Hänninen, M. Krusius, V.S. "L'vov", G.E. Volovik

    Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

    23 Sitaatiot (Scopus)
    198 Lataukset (Pure)

    Abstrakti

    Steady-state turbulent motion is created in superfluid 3He−B at low temperatures in the form of a turbulent vortex front, which moves axially along a rotating cylindrical container of 3He−B and replaces vortex-free flow with vortex lines at constant density. We present the first measurements on the thermal signal from dissipation as a function of time, recorded at 0.2Tc during the front motion, which is monitored using NMR techniques. Both the measurements and the numerical calculations of the vortex dynamics show that at low temperatures the density of the propagating vortices falls well below the equilibrium value, i.e., the superfluid rotates at a smaller angular velocity than the container. This is the first evidence for the decoupling of the superfluid from the container reference frame in the zero-temperature limit.
    AlkuperäiskieliEnglanti
    Artikkeli135302
    Sivut1-4
    JulkaisuPhysical Review Letters
    Vuosikerta107
    Numero13
    DOI - pysyväislinkit
    TilaJulkaistu - 2011
    OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

    Tutkimusalat

    • quantized vortices
    • superfluid 3He
    • vortex front

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