Superconducting nitridized-aluminum thin films

• URL: http://arxiv.org/abs/2308.06240v2
• Date: Mon, 8 Apr 2024 14:42:36 GMT
• Title: Superconducting nitridized-aluminum thin films
• Authors: Alba Torras-Coloma, Leyre Martínez de Olcoz, Eva Céspedes, Elia Bertoldo, David López-Núñez, Sagar Paul, Wolfgang Wernsdorfer, Gemma Rius, Pol Forn-Díaz,
• Abstract summary: We report the direct observation of superconductivity in nitridized-aluminum thin films. Nitridized aluminum as a promising material to be employed in superconducting quantum circuits for quantum technology applications.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We report the direct observation of superconductivity in nitridized-aluminum thin films. The films are produced by sputtering deposition of aluminum in a controlled mixture of nitrogen diluted in argon. The concentration of applied nitrogen directly determines the properties of the superconducting thin films. We observe samples displaying critical temperatures up to 3.38$\pm$0.01K and resilience to in-plane magnetic fields well above 1T, with good reproducibility of the results. This work represents an unambiguous demonstration of tunable superconductivity in aluminum-based nitridized thin films. Our results put forward nitridized aluminum as a promising material to be employed in superconducting quantum circuits for quantum technology applications.

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