Superconductivity of Cu CuOx interface formed by shock-wave pressure

A mixture of powdered Cu and CuO has been subjected to shock-wave pressure of 350 kbar with following quenching of the vacuum-encapsulated product to 77 K. The ac magnetic susceptibility measurements of the samples have revealed metastable superconductivity with Tc 19 K, characterized by glassy dyna...

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Bibliographic Details
Published in:Journal of physics. Conference series 2016-11, Vol.774 (1)
Main Authors: Shakhray, D V, Avdonin, V V, Palnichenko, A V
Format: Article
Language:English
Subjects:
Copper
Magnetic permeability
Magnetic shielding
Physics
Shock waves
Superconductivity
Online Access:Get full text
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Summary:A mixture of powdered Cu and CuO has been subjected to shock-wave pressure of 350 kbar with following quenching of the vacuum-encapsulated product to 77 K. The ac magnetic susceptibility measurements of the samples have revealed metastable superconductivity with Tc 19 K, characterized by glassy dynamics of the shielding currents below Tc. Comparison of the ac susceptibility and the DC magnetization measurements infers that the superconductivity arises within the granular interfacial layer formed between metallic Cu and its oxides due to the shock-wave treatment.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/774/1/012054