Visualization of a Berezinskii-Kosterlitz-Thouless Topological Phase Transition in a Josephson Medium: Detection of an Anomalous Temperature Dependence of the Magnetoresistance of YBa2Cu3O7-δ Granular High-Temperature Superconductors

被引：5

作者：

Sukhareva, T. V. ^{[1
]}

Finkel, V. A. ^{[1
]}

机构：

[1] Natl Acad Sci Ukraine, Natl Sci Ctr, Kharkov Inst Phys & Technol, UA-61108 Kharkov, Ukraine

来源：

JETP LETTERS | 2018年 / 108卷 / 04期

关键词：

VORTEX STRUCTURE EVOLUTION; MAGNETIC-FIELD; 2-DIMENSIONAL SYSTEMS; FILMS;

D O I：

10.1134/S0021364018160099

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The possibility of implementing a Berezinskii-Kosterlitz-Thouless topological phase transition in a Josephson medium of two-level high-temperature superconductors induced by a magnetic field has been studied. The effect of temperature and external magnetic field on the transport properties of the YBa2Cu3O7- granular high-temperature superconductor considered as a model object is studied experimentally. For the first time, an anomalous behavior of the magnetoresistance isotherms is detected in a narrow range of temperature and external magnetic field indicating a topological phase transition in the Josephson medium of granular high-temperature superconductors.

引用

页码：243 / 246

页数：4

共 50 条

[1] Visualization of a Berezinskii–Kosterlitz–Thouless Topological Phase Transition in a Josephson Medium: Detection of an Anomalous Temperature Dependence of the Magnetoresistance of YBa2Cu3O7–δ Granular High-Temperature Superconductors
T. V. Sukhareva
V. A. Finkel
[J]. JETP Letters, 2018, 108 : 243 - 246
[2] The Berezinskii-Kosterlitz-Thouless topological phase transition in the Josephson medium of granular high-temperature superconductors under the effect of magnetic and electric fields
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[J]. LOW TEMPERATURE PHYSICS, 2020, 46 (05) : 550 - 553
[3] 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
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[4] The Berezinskii-Kosterlitz-Thouless phase transition in the Josephson medium of a two-level granular high-temperature superconductor Ba2Cu3O7-δ
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[J]. LOW TEMPERATURE PHYSICS, 2018, 44 (03) : 194 - 198
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[6] Peculiarities of phase transitions in the Josephson medium of the granular high-temperature superconductors YBa2Cu3O7-δ under the influence of temperature, external magnetic field, and transport current
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Finkel, V. A.
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[J]. FUNCTIONAL MATERIALS, 2020, 27 (04): : 659 - 666
[7] Vortex structure and magnetoresistance of granular YBa2Cu3O7 − δ high-temperature superconductors
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[J]. Physics of the Solid State, 2010, 52 : 452 - 458
[8] Magnetoresistance hysteresis of granular YBa2Cu3O7-δ high-temperature superconductor in weak magnetic fields
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[9] Nonlinearity of the current-voltage characteristics for YBa2Cu3O7-x single crystals and the Berezinskii-Kosterlitz-Thouless transition
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[10] Nonlinearity of the current-voltage characteristics for YBa2Cu3O7–x single crystals and the Berezinskii-Kosterlitz-Thouless transition
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