Magnetoresistance Anisotropy and Scaling in Textured High-Temperature Superconductor Bi1.8Pb0.3Sr1.9Ca2Cu3Ox

Тип публикации: статья из журнала

Год издания: 2015

Идентификатор DOI: 10.1134/S1063783415110128

Аннотация: 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 phi is the angle between H and I, the anisotropic part of the magnetoresistance follows the functional dependence sin2 phi, 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 gamma approximate to 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.

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Издание

Журнал: PHYSICS OF THE SOLID STATE

Выпуск журнала: Vol. 57, Is. 11

Номера страниц: 2145-2150

ISSN журнала: 10637834

Место издания: NEW YORK

Издатель: MAIK NAUKA/INTERPERIODICA/SPRINGER

Авторы

  • Gokhfel'd D.M. (Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences)
  • Balaev D.A. (Siberian Federal University)
  • Semenov S.V. (Siberian Federal University)
  • Petrov M.I. (Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences)

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