Issue 72, 2020, Issue in Progress

Formation of buried superconducting Mo2N by nitrogen-ion-implantation

Abstract

Nitrogen ion implantation is a useful technique to put nitrogen ions into lattices. In this work, nitrogen ion implantation into epitaxial Mo films is performed to create a buried superconducting γ-Mo2N. Atomically flat epitaxial (110) Mo films are grown on (0001) Al2O3. By impinging nitrogen ions, where the beam energy is fixed to 20 keV, we observe (111) γ-Mo2N diffraction and the formation of a γ-Mo2N layer from X-ray reflectivity. Magnetization and transport measurements clearly support a superconducting layer in the implanted film. Our strategy shows that formation of a buried superconducting layer can be achieved through ion implantation and self-annealing.

Graphical abstract: Formation of buried superconducting Mo2N by nitrogen-ion-implantation

Supplementary files

Article information

Article type
Paper
Submitted
07 Oct 2020
Accepted
03 Dec 2020
First published
16 Dec 2020
This article is Open Access
Creative Commons BY license

RSC Adv., 2020,10, 44339-44343

Formation of buried superconducting Mo2N by nitrogen-ion-implantation

J. Lee, J. K. Park, J. W. Lee, Y. Heo, Y. S. Oh, J. S. Lee, J. Cho and H. Jeen, RSC Adv., 2020, 10, 44339 DOI: 10.1039/D0RA08533B

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