Quantum Hall–based superconducting interference device
- Duke Univ., Durham, NC (United States)
- Univ. of Appalachia, Boone, NC (United States)
- National Inst. for Materials Science (NIMS), Tsukuba (Japan)
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.
- Research Organization:
- Duke Univ., Durham, NC (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Grant/Contract Number:
- SC0002765
- OSTI ID:
- 1610734
- Journal Information:
- Science Advances, Vol. 5, Issue 9; ISSN 2375-2548
- Publisher:
- AAASCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 17 works
Citation information provided by
Web of Science
Web of Science
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