Supercurrent Flow in Multi-Terminal Graphene Josephson Junctions

Autor:	Draelos, Anne W., Wei, Ming-Tso, Seredinski, Andrew, Li, Hengming, Mehta, Yash, Watanabe, Kenji, Taniguchi, Takashi, Borzenets, Ivan V., Amet, Francois, Finkelstein, Gleb
Rok vydání:	2018
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics
Druh dokumentu:	Working Paper
DOI:	10.1021/acs.nanolett.8b04330
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. Comment: 3 Figures, 6 pages
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1810.11632 Zobrazit plný text záznamu View this record from Arxiv