Low Temperature Physics: 30, 610 (2004); https://doi.org/10.1063/1.1789919 (3 pages)
Fizika Nizkikh Temperatur: Volume 30, Number 7-8 (July 2004), p. 810-813    ( to contents , go back )

On nonmonotonic temperature dependence of magnetization in YBCO single crystals at low fields

V.P. Timofeev

B.Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Lenin Ave., Kharkov 61103, Ukraine
E-mail: timofeev@ilt.kharkov.ua

A.V. Bondarenko

Karazin Kharkov National University, 4 Svobody Sq., Kharkov 61077, Ukraine
E-mail: Aleksander.V.Bondarenko@univer.kharkov.ua
pos Анотація:

Received March, 11, 2004

Abstract

The experimental data on magnetic response of the YBa2Cu3O7–x single crystals with unidirectional twinning planes in low magnetic fields are reported. The nonmonotonic temperature dependence of magnetization is treated in terms of some probable model of the existence of Josephson weak links in the twinning planes and the order parameter anisotropy.

PACS:
74.25.Qt - Vortex lattices, flux pinning, flux creep
74.50.+r - Tunneling phenomena; point contacts, weak links, Josephson effects (for SQUIDs, see 85.25.Dq; for Josephson devices, see 85.25.Cp; for Josephson junction arrays, see 74.81.Fa)

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