Abstract
Electrons in graphene exhibit hydrodynamic behavior in a certain range of temperatures. We indicate that in this regime electric current can result in cooling of electron fluid due to the Joule—Thomson effect. Cooling occurs in the Fermi-liquid regime, while for the Dirac fluid the effect results in heating.
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Acknowledgments
I am grateful to A. Balatsky and G. Falkovich for discussions.
Funding
This work was supported by the Russian Foundation for Basic Research, project no. 18-02-40137.This work was supported by the Swedish Research Council (VR) (grant no. 2013-4329), by the Knut and Alice Wallenberg Foundation (grant “Exact Results in Gauge and String Theories”), and by the Russian Foundation for Basic Research (project no. 18-01-00460A).
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Zarembo, K. Joule—Thomson Cooling in Graphene. Jetp Lett. 111, 157–161 (2020). https://doi.org/10.1134/S0021364020030030
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DOI: https://doi.org/10.1134/S0021364020030030