Abstract:
This paper presents a comparative study of the complex permeability $\mu^*$ of single crystals of hightemperature superconductors $R$Ba$_{2}$Cu$_{3}$O$_{y}$ ($R$ = Y, Tm) as a function of the magnetic field applied along the crystallographic $ab$-plane. Contributions to $\mu^*$ from the oscillatory motion of vortices perpendicular to layers of the crystal lattice, $\mu_v$, and realization of the critical state along the layers are obtained. It is found that, as the temperature approaches $T_{c}$, the behavior of the field dependences of $\mu_v$ and the critical current is substantially different for the given samples. This effect is related to the manifestation of an additional unusual mechanism of intrinsic pinning, which arises when Y$^{3+}$ is replaced with the Tm$^{3+}$ magnetic ion. The revealed specificities of the interaction of vortices with the magnetic ion layer suggest that, most probably, they have a magnetic nature and are not related to the variation in the condensation energy in the core of the vortex.
Citation:
K. S. Pigalskiy, “Enhancement of the intrinsic pinning by a magnetic field in a single crystal of high-temperature superconductor TmBa$_{2}$Cu$_{3}$O$_{y}$”, Fizika Tverdogo Tela, 59:3 (2017), 440–446; Phys. Solid State, 59:3 (2017), 450–456
\Bibitem{Pig17}
\by K.~S.~Pigalskiy
\paper Enhancement of the intrinsic pinning by a magnetic field in a single crystal of high-temperature superconductor TmBa$_{2}$Cu$_{3}$O$_{y}$
\jour Fizika Tverdogo Tela
\yr 2017
\vol 59
\issue 3
\pages 440--446
\mathnet{http://mi.mathnet.ru/ftt9632}
\crossref{https://doi.org/10.21883/FTT.2017.03.44151.313}
\elib{https://elibrary.ru/item.asp?id=29006137}
\transl
\jour Phys. Solid State
\yr 2017
\vol 59
\issue 3
\pages 450--456
\crossref{https://doi.org/10.1134/S106378341703026X}
Linking options:
https://www.mathnet.ru/eng/ftt9632
https://www.mathnet.ru/eng/ftt/v59/i3/p440
This publication is cited in the following 2 articles:
K. S. Pigalskiy, “Vibrational motion of a vortex lattice induced near the surface of a type-II superconductor by an external low-frequency ac magnetic field”, Phys. Rev. B, 103:6 (2021)
K.S. Pigalskiy, L.I. Trakhtenberg, “Enhancement of intrinsic pinning in the high-temperature superconductor TmBa2Cu3O : Manifestation of the interaction between vortices and a magnetic rare-earth ion”, Journal of Magnetism and Magnetic Materials, 497 (2020), 165916