Quantum Hall-based superconducting interference device.

Journal Article (Journal Article)

We present a study of a graphene-based Josephson junction with dedicated side gates carved from the same sheet of graphene as the junction itself. These side gates are highly efficient and allow us to modulate carrier density along either edge of the junction in a wide range. In particular, in magnetic fields in the 1- to 2-T range, we are able to populate the next Landau level, resulting in Hall plateaus with conductance that differs from the bulk filling factor. When counter-propagating quantum Hall edge states are introduced along either edge, we observe a supercurrent localized along that edge of the junction. Here, we study these supercurrents as a function of magnetic field and carrier density.

Full Text

Duke Authors

Cited Authors

  • Seredinski, A; Draelos, AW; Arnault, EG; Wei, M-T; Li, H; Fleming, T; Watanabe, K; Taniguchi, T; Amet, F; Finkelstein, G

Published Date

  • September 2019

Published In

Volume / Issue

  • 5 / 9

Start / End Page

  • eaaw8693 -

PubMed ID

  • 31548985

Pubmed Central ID

  • PMC6744260

Electronic International Standard Serial Number (EISSN)

  • 2375-2548

International Standard Serial Number (ISSN)

  • 2375-2548

Digital Object Identifier (DOI)

  • 10.1126/sciadv.aaw8693


  • eng