Thermal self-oscillations in monolayer graphene coupled to a superconducting microwave cavity

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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New Journal of Physics, Volume 24, issue 10
Nonlinear phenomena in superconducting resonator circuits are of great significance in the field of quantum technology. We observe thermal self-oscillations in a monolayer graphene flake coupled to molybdenum-rhenium superconducting resonator. The graphene flake forms a SINIS junction coupled to the resonator with strong temperature dependent resistance. In certain conditions of pump power and frequency, this nonlinearity leads to thermal self-oscillations appearing as sidebands in cavity transmission measurements with strong temperature dependence and gate tunability. The experimental observations fit well with theoretical model based on thermal instability. The modelling of the oscillation sidebands provides a method to evaluate electron phonon coupling in disordered graphene sample at low energies.
Funding Information: We are grateful to M Dykman, S H Raja, H Seppä, and V Shumeiko for useful discussions. This work was supported by the Academy of Finland projects 314448 (BOLOSE) and 336813 (CoE, Quantum Technology Finland) as well as by ERC (Grant No. 670743). The research leading to these results has received funding from the European Union’s Horizon 2020 Research and Innovation Programme, under Grant Agreement No. 824109, and the experimental work benefited from the Aalto University OtaNano/LTL infrastructure. MTH acknowledges support from the European Union’s Horizon 2020 Programme for Research and Innovation under Grant Agreement No. 722923 (Marie Curie ETN-OMT). Publisher Copyright: © 2022 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft. | openaire: EC/H2020/670743/EU//QuDeT | openaire: EC/H2020/824109/EU//EMP | openaire: EC/H2020/722923/EU//OMT
condensed matter physics, electron-phonon coupling, graphene, quantum technology, superconducting resonator, thermal instability
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Haque , M T , Will , M , Zyuzin , A , Golubev , D & Hakonen , P 2022 , ' Thermal self-oscillations in monolayer graphene coupled to a superconducting microwave cavity ' , New Journal of Physics , vol. 24 , no. 10 , 103008 , pp. 1-16 .