Dataset for "Superconducting Quantum Interference in Twisted van der Waals Heterostructures"

The dataset represents the results of electrical measurement that underpin the figures in the main manuscript and supplementary materials of "Superconducting Quantum Interference in Twisted van der Waals Heterostructures" Nano Lett. 2021, 21, 6725−6731. This manuscript describes the use of dry stamping technologies to create 2H-NbSe2 van der Waals heterostructures with twisted interfaces. We show that these behave as Josephson junctions whose I-V characteristics depend systematically on twist angle. We have developed a fabrication protocol to pattern these into Superconducting QUantum Interferometer Device (SQUID) structures containing two junctions coupled in a superconducting loop, and show that these behave as high quality DC SQUIDs with high current modulation levels in an applied an magnetic field. The archived data represent current-voltage characteristics of our Josephson Junctions and SQUIDs as a function of temperature, magnetic field and twist angle. These have been captured to establish the damping regime the junctions are operating in and to characterise the performance of SQUIDs fabricated from them.

Keywords:
Van der Waal heterostructures, Josephson junction, Superconducting quantum interference device, Two-dimensional materials, NbSe2, conden
Subjects:
Materials sciences
Superconductivity, magnetism and quantum fluids

Cite this dataset as:
Farrar, L., Nevill, A., Lim, Z., Balakrishnan, G., Bending, S., 2021. Dataset for "Superconducting Quantum Interference in Twisted van der Waals Heterostructures". Bath: University of Bath Research Data Archive. Available from: https://doi.org/10.15125/BATH-01090.

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Data

NanoLetters_SQUID_Dataset.zip
application/zip (1MB)
Creative Commons: Attribution 4.0

Data underpining the figures of the main manuscript and supplementary materials for "Superconducting Quantum Interference in Twisted van der Waals Heterostructures", Nano Lett. 2021, 21, 6725−6731

Creators

Liam S Farrar
University of St Andrews

Aimee Nevill
University of Bath

Zhen Jieh Lim
University of Bath

Geetha Balakrishnan
University of Warwick

Contributors

University of Bath
Rights Holder

Coverage

Collection date(s):

From 1 October 2019 to 1 October 2021

Documentation

Data collection method:

Data either represent the raw experimental datafiles as captured with our measurement apparatus, or as parameter extracted directly from these raw data files using standard fitting practices.

Data processing and preparation activities:

N/A

Technical details and requirements:

Data were collected using a Keithley 2400 source measure unit and a Kepco BOP 50-8 bipolar power supply controlled with LabVIEW code. Samples were cooled in a JANIS Research SHI-4-1 crocooler system pumped with a Leybold TURBOLAB80-FF-ISO pump.

Additional information:

All data uploaded as readily accessible text files.

Documentation Files

README.txt
text/plain (128B)

Contact details for queries about datasets.

Funders

Engineering and Physical Sciences Research Council (EPSRC)
https://doi.org/10.13039/501100000266

Centre for Doctoral Training
EP/ L015544

Engineering and Physical Sciences Research Council (EPSRC)
https://doi.org/10.13039/501100000266

Standard Research
EP/T005963/1

Publication details

Publication date: 11 November 2021
by: University of Bath

Version: 1

DOI: https://doi.org/10.15125/BATH-01090

URL for this record: https://researchdata.bath.ac.uk/id/eprint/1090

Related papers and books

Farrar, L. S., Nevill, A., Lim, Z. J., Balakrishnan, G., Dale, S. and Bending, S. J., 2021. Superconducting Quantum Interference in Twisted van der Waals Heterostructures. Nano Letters, 21(16), pp.6725-6731. Available from: https://doi.org/10.1021/acs.nanolett.1c00152.

Contact information

Please contact the Research Data Service in the first instance for all matters concerning this item.

Contact person: Liam S Farrar

Departments:

Faculty of Science
Physics

Research Centres & Institutes
Centre for Nanoscience and Nanotechnology