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

  • Liam S Farrar (Contributor)
  • Aimee Nevill (Contributor)
  • Zhen Jieh Lim (Contributor)
  • Geetha Balakrishnan (Contributor)
  • Simon J Bending (Contributor)



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.,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.,N/A,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.,All data uploaded as readily accessible text files.,
Date made available11 Nov 2021
PublisherUniversity of Bath

Cite this