Article Self-heating effects and switching dynamics in graphene multiterminal Josephson junctions

Máté Kedves ORCID (Budapest University of Technology and Economics) ; Tamás Pápai (Budapest University of Technology and Economics) ; Gergo ̋ Fülöp ORCID (Budapest University of Technology and Economics) ; Kenji Watanabe SAMURAI ORCID (Research Center for Electronic and Optical Materials, National Institute for Materials ScienceROR) ; Takashi Taniguchi SAMURAI ORCID (Research Center for Materials Nanoarchitectonics (MANA)/Nanomaterials Field/High-Pressure Structural Controls Group, National Institute for Materials ScienceROR) ; Péter Makk ORCID (Budapest University of Technology and Economics) ; Szabolcs Csonka (Budapest University of Technology and Economics)

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Máté Kedves, Tamás Pápai, Gergo ̋ Fülöp, Kenji Watanabe, Takashi Taniguchi, Péter Makk, Szabolcs Csonka. Self-heating effects and switching dynamics in graphene multiterminal Josephson junctions. Physical Review Research. 2024, 6 (3), 33143-. https://doi.org/10.1103/PhysRevResearch.6.033143

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(abstract)

We experimentally investigate the electronic transport properties of a three-terminal graphene Josephson junction. We find that self-heating effects strongly influence the behaviour of this multi- terminal Josephson junction (MTJJ) system. We show that existing simulation methods based on resistively and capacitively shunted Josephson junction networks can be significantly improved by taking into account these heating effects. We also investigate the phase dynamics in our MTJJ by measuring its switching current distribution and find correlated switching events in different junc- tions. We show that the switching dynamics is governed by phase diffusion at low temperatures. Furthermore, we find that self-heating introduces additional damping which results in overdamped I-V characteristics when normal and supercurrents coexist in the device.

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Keyword: Graphene Josephson junction, electronic transport, self-heating

Date published: 2024-08-06

Publisher: American Physical Society

Journal:

  • Physical Review Research (ISSN: 26431564) vol. 6 issue. 3 p. 33143-

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Manuscript type: Publisher's version (Version of record)

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First published URL: https://doi.org/10.1103/PhysRevResearch.6.033143

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Updated at: 2025-02-06 12:30:41 +0900

Published on MDR: 2025-02-06 12:30:41 +0900

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