Superconductivity of Mg/MgO interface formed by shock-wave pressure
N.S. Sidorov, A.V. Palnichenko, D. V. Shakhrai, V. V. Avdonin, O. M., Vyaselev, S.S. Khasanov
TL;DR
This study demonstrates that shock-wave pressure induces a metastable superconducting state at 30 K in the Mg/MgO interface, revealing new interfacial superconductivity phenomena.
Contribution
It introduces a novel method of inducing superconductivity at interfaces via shock-wave pressure in Mg/MgO systems.
Findings
Superconductivity observed at 30 K in Mg/MgO interface
Superconductivity characterized by glassy shielding currents
Interfacial layer identified as the superconducting region
Abstract
A mixture of Mg and MgO has been subjected to a shock-wave pressure of 170 kbar. The ac susceptibility measurements of the product has revealed a metastable superconductivity with Tc=30 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 interfacial layer formed between metallic Mg and its oxide due to the shock-wave treatment.
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