Josephson Junctions in Graphene Constrictions in the Quantum Hall Regime
ORAL
Abstract
Several groups have recently reported on samples made of encapsulated graphene with superconducting contacts in the quantum Hall (QH) regime. Here, we study ballistic graphene Josephson devices based on ~100nm constrictions between superconducting molybdenum-rhenium electrodes in the QH regime. A robust supercurrent has been observed up to 2.5 T, well above the onset of the Hall quantization. We demonstrate that the supercurrent is conducted by the states within the short and narrow channel confined on each side by the gapped graphene bulk. This situation is different from our previous observation of supercurrent.
*M.T.W. and G.F. were supported by the Office of Basic Energy Sciences, US DoE, Award DE-SC0002765. A.D., A.S., G.F., Y.M., E.M., and F.A. were supported by ARO Award W911NF-16-1-0122 and Award W911NF-16-1-0132.
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Presenters
Ming-Tso Wei
Physics, Duke University
Duke University
Physics, Duke Univ
Authors
Ming-Tso Wei
Physics, Duke University
Duke University
Physics, Duke Univ
Anne Draelos
Physics, Duke University
Duke University
Physics, Duke Univ
Andrew Seredinski
Physics, Duke University
Duke University
Physics, Duke Univ
Chung-Ting Ke
Physics, Duke University
Duke University
Physics, Duke Univ
Yash Mehta
Appalachian State University
Physics and Astronomy, Appalachian State Univeristy
Physics and Astronomy, Appalachian State University
Ethan Mancil
Appalachian State University
Physics and Astronomy, Appalachian State Univeristy
Physics and Astronomy, Appalachian State University
Kenji Watanabe
National Institute for Materials Science
NIMS
National Institute for Material Science
Advanced Materials Laboratory, National Institute for Materials Science
National Institute of Materials Science
Research Center for Functional Materials, National Institute for Materials Science
National Institute for Materials Science (NIMS
Advanced Materials Laboratory, NIMS
National Institute for Materials Science, Advanced Materials Laboratory
National Institue for Materials Science
National Institute of Material Science
National Institute for Matericals Science
Advanced Materials Laboratory
National Institute for Materials Science, 1-1 Namiki
Advanced materials laboratory, National institute for Materials Science
NIMS-Japan
Takashi Taniguchi
National Institute for Materials Science
NIMS
National Institute for Material Science
Advanced Materials Laboratory, National Institute for Materials Science
National Institute of Materials Science
Research Center for Functional Materials, National Institute for Materials Science
National Institute for Materials Science (NIMS
Advanced Materials Laboratory, NIMS
National Institute for Materials Science, Advanced Materials Laboratory
National Institue for Materials Science
National Institute of Material Science
National Institute for Matericals Science
Advanced Materials Laboratory
National Institute for Materials Science, 1-1 Namiki
NIMS-Japan
Michihisa Yamamoto
Department of Applied Physics, University of Tokyo
University of Tokyo
JST
PRESTO, JST
Applied Physics, University of Tokyo
Seigo Tarucha
Department of Applied Physics, University of Tokyo
University of Tokyo
Department of Applied Physics, The University of Tokyo
Applied Physics, University of Tokyo
Applied Physics, The University of Tokyo
Ivan Borzenets
University of Tokyo
City University of Hong Kong
Department of Physics, City University of Hong Kong
Francois Amet
Appalachian State University
Physics and Astronomy, Appalachian State Univeristy
Physics and Astronomy, Appalachian State University
