Magnetoresistance Anisotropy and Scaling in Textured High-Temperature Superconductor Bi1.8Pb0.3Sr1.9Ca2Cu3Ox
URI (for links/citations):http://elib.sfu-kras.ru/handle/2311/33170
Gokhfel’D, D. M.
Balaev, D. A.
Semenov, S. V.
Petrov, M. I.
Институт инженерной физики и радиоэлектроники
Кафедра общей физики
Journal Name:Physics of the Solid State
Journal Quartile in Scopus:Q3
Journal Quartile in Web of Science:Q4
Bibliographic Citation:Gokhfel’D, D. M. Magnetoresistance Anisotropy and Scaling in Textured High-Temperature Superconductor Bi1.8Pb0.3Sr1.9Ca2Cu3Ox [Текст] / D. M. Gokhfel’D, D. A. Balaev, S. V. Semenov, M. I. Petrov // Physics of the Solid State. — 2015. — Т. 57 (№ 11). — С. 2145-2150
Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала.
The magnetoresistance of the textured high-temperature superconductor (HTSC) Bi1.8Pb0.3Sr1.9Ca2Cu3Ox + Ag has been studied at different directions of the transport current I and external magnetic field H with respect to crystallographic directions of HTSC crystallites. When I and H are oriented along the ab planes of crystallites and φ is the angle between H and I, the anisotropic part of the magnetoresistance follows the functional dependence sin2φ, which is characteristic of vortex flows under Lorentz forces. The magnetoresistance R at H parallel to the c axis of crystallites (H || c) is higher than R at H || ab for both cases of I || c and I || ab. The anisotropy coefficient γ ≈ 2.3 has been estimated from the scaling of the dependences R(H) measured at H || c and H || ab. The inclusion of the magnetic field induced by the transport current allows scaling of the dependences R(H) at different values of I. A qualitative picture of the current flow along the c axis of crystallites in the textured HTSC has been proposed.