Field dependence of the surface resistance change at as a function of the square root of the applied field, , at various temperatures. Empty circles: experimental data (50% of the data is shown to avoid crowding). Continuous lines are two-parameter fits obtained by means of Eq. (3); the curves are systematically displaced for readability; the upper curve corresponds to the highest temperature. It is seen that the behavior is not a simple square root.
Vortex viscosity of the DyBCO monodomain, together with the phenomenological law (Ref. 9), with .
Fluxon viscosity dependence vs reduced temperature , for a set of 123 materials measured at similar frequencies: the DyBCO monodomain of this work, full circles; a SmBCO thin film (Ref. 24), open circles; and a YBCO single crystal (Ref. 25), crossed circles; a universal behavior is evident, which shows that the electronic state inside the vortex cores is the same in all the materials.
Main panel: penetration depth temperature dependence in a DyBCO monodomain (full circles) and two-fluid law given by Eq. (7) with (-wave case) and . Inset: comparison of our values of (full circles, fitting parameters of the magnetic dissipation) and data taken in YBCO single crystals (Ref. 26) (empty circles), plotted as vs . Our data superimpose to the data on single crystals using .
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