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Author
Haberkorn, N.
;
Zhang, Y.Y.
;
Bi, Z.X.
;
Park, B.H.
;
Civale, L.
;
Jia, Q.X
Title
Effect of Co2N impurity on the superconducting properties of δ-MoN thin films grown by polymer assisted deposition
Type
Journal Article
Year
2021
Publication
Materials Chemistry and Physics
Abbreviated Journal
Materials Chemistry and Physics
Volume
259
Issue
Pages
124184
Keywords
Abstract
We report the effect of Co2N impurity on the superconducting properties of δ-MoN thin films grown by polymer-assisted deposition on c-cut sapphire (Al2O3). The films show a superconducting transition temperature of 10.4 K and an upper critical field Hc2(0) perpendicular to the film surface around 3 T. The latter corresponds to a relatively large coherence length ξ, which enhances the two-dimensional limit when the magnetic field is applied parallel to the film surface. In comparison with pure δ-MoN films, the inclusion of Co2N impurity in the δ-MoN films could significantly modify the critical current density at the vortex-free state. The ability to tune the superconducting properties of metal-nitride superconductors by introducing chemically and structurally compatible impurity may find potential applications for superconducting single-photon detectors.
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0254-0584
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BT @ pedrazp @
Serial
873
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