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Pis'ma v Zh. Èksper. Teoret. Fiz., 2018, Volume 108, Issue 4, Pages 249–252 (Mi jetpl5678)  

CONDENSED MATTER

Visualization of a Berezinskii–Kosterlitz–Thouless topological phase transition in a Josephson medium: detection of an anomalous temperature dependence of the magnetoresistance of YBa$_2$Cu$_3$O$_{7-\delta}$ granular high-temperature superconductors

T. V. Sukhareva, V. A. Finkel

National Science Center Kharkov Institute of Physics and Technology, National Academy of Sciences of Ukraine, Kharkiv, Ukraine

Abstract: 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 YBa$_2$Cu$_3$O$_{7-\delta}$ 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.

DOI: https://doi.org/10.1134/S0370274X18160051

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English version:
Journal of Experimental and Theoretical Physics Letters, 2018, 108:4, 243–246

Bibliographic databases:

Received: 30.05.2018
Revised: 09.07.2018

Citation: T. V. Sukhareva, V. A. Finkel, “Visualization of a Berezinskii–Kosterlitz–Thouless topological phase transition in a Josephson medium: detection of an anomalous temperature dependence of the magnetoresistance of YBa$_2$Cu$_3$O$_{7-\delta}$ granular high-temperature superconductors”, Pis'ma v Zh. Èksper. Teoret. Fiz., 108:4 (2018), 249–252; JETP Letters, 108:4 (2018), 243–246

Citation in format AMSBIB
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\paper Visualization of a Berezinskii--Kosterlitz--Thouless topological phase transition in a Josephson medium: detection of an anomalous temperature dependence of the magnetoresistance of YBa$_2$Cu$_3$O$_{7-\delta}$ granular high-temperature superconductors
\jour Pis'ma v Zh. \`Eksper. Teoret. Fiz.
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\vol 108
\issue 4
\pages 249--252
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\crossref{https://doi.org/10.1134/S0370274X18160051}
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