Evolution of vortex structure of two-level granular high temperature superconductor YBa2Cu3O7-δ under influence of temperature, magnetic field, and transport current
- Resource Type
- Conference
- Authors
- Derevyanko, V. V.; Finkel, V. A.; Sukhareva, T. V.; Sunhurov, M. S.
- Source
- 2017 IEEE International Young Scientists Forum on Applied Physics and Engineering (YSF) Young Scientists Forum on Applied Physics and Engineering (YSF), 2017 IEEE International. :171-174 Oct, 2017
- Subject
- Aerospace
Bioengineering
Components, Circuits, Devices and Systems
Computing and Processing
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Geoscience
Photonics and Electrooptics
Power, Energy and Industry Applications
Signal Processing and Analysis
High-temperature superconductors
Magnetic fields
Temperature measurement
Resistance
Temperature dependence
Temperature distribution
Superconducting transition temperature
granular
superconductivity
vortex structure
phase transitions
magnetic field
- Language
The measurements of temperature dependences of electrical resistivity of granular high temperature superconductor (HTS) YBa 2 Cu 3 O 7−δ ρ(T) at different values of external magnetic field 0 ≤ H ext ≤ 100 Oe in the range of temperatures from the temperature of resistivity appearance Tp=0 to critical temperature of superconducting transition are carried out at transport current density j = 50 − 2000 mA/cm 2 . The influence of temperature, external magnetic field and transport current density on kinetics of phase transitions in both subsystems of the granular HTS was investigated. The possibility of passing the Berezinskii-Kosterlitz-Thouless transition (BKT — transition) in the Josephson medium is established. The conditions at which such topological phase transition is observed are studied.