Low Temperature Physics: 46, 550 (2020); https://doi.org/10.1063/10.0001060
The Berezinskii–Kosterlitz–Thouless topological phase transition in the Josephson medium of granular high-temperature superconductors under the influence of a magnetic and electric fields
T.V. Sukhareva and V.A. Finkel
National Science Center, Kharkov Institute of Physics and Technology 1 Akademicheskaya Str., Kharkiv 61108, Ukraine
Received December 16, 2019, published online March 24, 2020
The work is devoted to establishing the identity of the topo-logical phases arising in the Josephson medium of granular high-temperature superconductors YBa2Cu3O7–δ during phase transitions of the Berezinskii–Kosterlitz–Thouless (BKT) under the influence of an external magnetic field and transport current. It is established that the nature of the topological phases arising as a result of the BKT phase transition does not depend on the type of external influence.
Key words: topological phase transition, topological phases, granular high-temperature superconductor, YBa2Cu3O7–δ, Josephson medium, magnetic field, transport current.