Superconducting fluctuations and magnetic properties of NbN/NiCu and NbTiN/NiCu bilayer nanostructures for photon detection
- Author(s)
- Wolfgang Lang, Bernd Aichner, Georg Zechner, Florian Jausner, A. Klimov, W. Slysz, M. Guziewicz, R. Kruszka, M. Wegrzecki, R. Puzniak, Roman Sobolewski
- Abstract
Thermodynamic fluctuations of the superconducting order parameter in NbN/NiCu and NbTiN/NiCu superconductor/ferromagnet (S/F) thin bilayers patterned to microbridges are investigated. Plain NbN and NbTiN films served as reference materials for the analyses. The S/F bilayers show a negative magnetoresistance up to almost room temperature, while the signature of fluctuations is similarly to that in the plain films, demonstrating the relevance of both ferromagnetic and superconducting effects in the S/F bilayers. The paraconductivity is reduced below theoretical predictions, in particular in the NbTiN/NiCu bilayers.
- Organisation(s)
- Electronic Properties of Materials
- External organisation(s)
- Universität Wien, Instytut Technologii Elektronowej, Polish Academy of Sciences (PAS), University of Rochester
- Journal
- IEEE Xplore Digital Library
- Pages
- 1-3
- No. of pages
- 3
- DOI
- https://doi.org/10.1109/ISEC.2017.8314232
- Publication date
- 07-2017
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103026 Quantum optics, 103033 Superconductivity, 210005 Nanophotonics
- Keywords
- ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials, Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/superconducting-fluctuations-and-magnetic-properties-of-nbnnicu-and-nbtinnicu-bilayer-nanostructures-for-photon-detection(f0372b0b-2fbb-41a4-8ed6-7efbb5e693b5).html