Supercurrent Flow in Multiterminal Graphene Josephson Junctions
| Autor: | Hengming Li, Ming-Tso Wei, Francois Amet, Ivan Borzenets, Anne Draelos, Yash Mehta, Kenji Watanabe, Gleb Finkelstein, Andrew Seredinski, Takashi Taniguchi |
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| Rok vydání: | 2019 |
| Předmět: |
Josephson effect
Materials science FOS: Physical sciences Bioengineering 02 engineering and technology Electron law.invention chemistry.chemical_compound Condensed Matter::Materials Science Planar law Condensed Matter::Superconductivity Mesoscale and Nanoscale Physics (cond-mat.mes-hall) General Materials Science Superconductivity Condensed matter physics Condensed Matter - Mesoscale and Nanoscale Physics Graphene Mechanical Engineering Supercurrent General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics chemistry Boron nitride Dissipative system 0210 nano-technology |
| Zdroj: | Nano letters. 19(2) |
| ISSN: | 1530-6992 |
| Popis: | We investigate the electronic properties of ballistic planar Josephson junctions with multiple superconducting terminals. Our devices consist of monolayer graphene encapsulated in boron nitride with molybdenum-rhenium contacts. Resistance measurements yield multiple resonant features, which are attributed to supercurrent flow among adjacent and non-adjacent Josephson junctions. In particular, we find that superconducting and dissipative currents coexist within the same region of graphene. We show that the presence of dissipative currents primarily results in electron heating and estimate the associated temperature rise. We find that the electrons in encapsulated graphene are efficiently cooled through the electron-phonon coupling. 3 Figures, 6 pages |
| Databáze: | OpenAIRE |
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