Intrinsic supercurrent non-reciprocity coupled to the crystal structure of a van der Waals Josephson barrier

Jae-Keun Kim (), Kun-Rok Jeon, Pranava K. Sivakumar, Jaechun Jeon, Chris Koerner, Georg Woltersdorf and Stuart S. P. Parkin ()
Additional contact information
Jae-Keun Kim: Max Planck Institute of Microstructure Physics, Weinberg 2
Kun-Rok Jeon: Chung-Ang University (CAU)
Pranava K. Sivakumar: Max Planck Institute of Microstructure Physics, Weinberg 2
Jaechun Jeon: Max Planck Institute of Microstructure Physics, Weinberg 2
Chris Koerner: Martin Luther University Halle-Wittenberg, Von-Danckelmann-Platz 3
Georg Woltersdorf: Martin Luther University Halle-Wittenberg, Von-Danckelmann-Platz 3
Stuart S. P. Parkin: Max Planck Institute of Microstructure Physics, Weinberg 2

Nature Communications, 2024, vol. 15, issue 1, 1-8

Abstract: Abstract Non-reciprocal electronic transport in a spatially homogeneous system arises from the simultaneous breaking of inversion and time-reversal symmetries. Superconducting and Josephson diodes, a key ingredient for future non-dissipative quantum devices, have recently been realized. Only a few examples of a vertical superconducting diode effect have been reported and its mechanism, especially whether intrinsic or extrinsic, remains elusive. Here we demonstrate a substantial supercurrent non-reciprocity in a van der Waals vertical Josephson junction formed with a Td-WTe2 barrier and NbSe2 electrodes that clearly reflects the intrinsic crystal structure of Td-WTe2. The Josephson diode efficiency increases with the Td-WTe2 thickness up to critical thickness, and all junctions, irrespective of the barrier thickness, reveal magneto-chiral characteristics with respect to a mirror plane of Td-WTe2. Our results, together with the twist-angle-tuned magneto-chirality of a Td-WTe2 double-barrier junction, show that two-dimensional materials promise vertical Josephson diodes with high efficiency and tunability.

Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-024-45298-9 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-45298-9

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-024-45298-9

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().