Pinning in nomagnetic borocarbides

Abstract

͑͒The field dependences of the Labush parameter in nonmagnetic borocarbides are measured by a method that does not require achieving a critical state. The expected values of the critical current are estimated. The values obtained are two orders of magnitude greater than the results of "direct" measurements performed on the basis of transport ͑magnetic͒ experiments. A giant peak effect, which the collective pinning model describes quantitatively well, is observed in the field dependences of the Labush parameter in Y-containing borocarbides. ͓͔

Magnus force and acoustic Stewart-Tolman effect in type-II superconductors

“…We note that the coefficient α M obtained is in two orders of magnitude smaller than η (Ref. [10]) at the same H. It is interesting to compare the value of the Hall coefficient R H = Ωτ /(σ 0 H) that follows from our experimental data with the results obtained by the transport measurements. For the Y-based compounds at H = 4 T and T = 5 K we have R H ≈ 2.8•10 −12 Ω•cm•Oe −1 that almost coincides with the results of Ref.…”

“…We note that the coefficient α M is by two orders of magnitude smaller than η (ref. [10]) at the same H.…”