Research Data Leeds Repository

Citation

Vaughan, Matthew and Satchell, Nathan and Ali, Mannan and Kinane, Christian J. and Stenning, Gavin and Langridge, Sean and Burnell, Gavin (2019) Dataset associated with 'On the Origin of Superconductivity at Nickel-Bismuth Interfaces'. University of Leeds. [Dataset] https://doi.org/10.5518/740

Dataset description

Unconventional superconductivity has been suggested to be present at the interface between bismuth and nickel in thin-film bilayers. In this work, we study the structural, magnetic and superconducting properties of sputter deposited Bi/Ni bilayers. As-grown, our films do not display a superconducting transition, however, when stored at room temperature, after about 14 days our bilayers develop a superconducting transition up to 3.8 K. To systematically study the effect of low temperature annealing on our bilayers, we perform structural characterization with X-ray diffraction and polarized neutron reflectometry, along with magnetometry and low temperature electrical transport measurements on samples annealed at 70C. We show that the onset of superconductivity in our samples is coincident with the formation of ordered NiBi_3 intermetallic alloy, a known $s$-wave superconductor. We calculate that the annealing process has an activation energy of (0.86+/- 0.06)eV. As a consequence, gentle heating of the bilayers will cause formation of the superconducting \NiBi\ at the Ni/Bi interface, which poses a challenge to studying any distinct properties of Bi/Ni bilayers without degrading that interface.

Subjects:	F000 - Physical sciences > F300 - Physics > F320 - Chemical physics > F321 - Solid-state physics
Divisions:	Faculty of Engineering and Physical Sciences > School of Physics and Astronomy
Related resources:	Location Type https://doi.org/10.5286/ISIS.E.RB1920455 Dataset https://doi.org/10.1103/PhysRevResearch.2.013270 Publication https://eprints.whiterose.ac.uk/156605/ Publication
License:	Creative Commons Attribution 4.0 International (CC BY 4.0)
Date deposited:	27 Feb 2020 09:59
URI:	https://archive.researchdata.leeds.ac.uk/id/eprint/646
Additional details Additional details Creators or authors: Creators ORCID Other ID Email Primary affiliation Primary affiliation ID Primary affiliation ID type Secondary affiliation Secondary affiliation ID Secondary affiliation ID type Vaughan, Matthew https://orcid.org/0000-0002-8336-2183 University of Leeds https://ror.org/024mrxd33 ror Satchell, Nathan https://orcid.org/0000-0003-1597-2489 University of Leeds https://ror.org/024mrxd33 ror Ali, Mannan https://orcid.org/0000-0002-7426-7731 University of Leeds https://ror.org/024mrxd33 ror Kinane, Christian J. https://orcid.org/0000-0002-1185-0719 ISIS Neutron and Muon Source https://ror.org/01t8fg661 ror Stenning, Gavin ISIS Neutron and Muon Source https://ror.org/01t8fg661 ror Langridge, Sean https://orcid.org/0000-0003-1104-0772 ISIS Neutron and Muon Source https://ror.org/01t8fg661 ror Burnell, Gavin https://orcid.org/0000-0002-9486-0639 University of Leeds https://ror.org/024mrxd33 ror Type of data: Dataset Research funders: EPSRC, EPSRC, EU Grant numbers: DTP, EP/M000923/1, MCSA 743791 Publication date: 2019 Resource language: English Metadata language: English Research project title: Spintronics@Leeds, SUPERSPIN Publisher: University of Leeds Contact email: g.burnell@leeds.ac.uk Last Modified: 19 Dec 2024 13:58

Files

Documentation

Contents [9kB] Contents [9kB] Contents [9kB] Security: Anyone File name: Dataset.zip.manifest.txt Content type: Documentation Description: File listing of dataset.zip Mime-Type: text/plain File size: 9kB

Data

Data files [1MB] Data files [1MB] Data files [1MB] Security: Anyone File name: dataset.zip Content type: Data Description: Magnetometry, X-ray diffraction, electrical transport and reduced polarised neutron reflectometry data files Mime-Type: application/zip File size: 1MB