Fluidity onset in graphene
Name
s41467-018-07004-4.pdf
Size
1.09 MB
Format
Adobe PDF
Checksum (MD5)
d3f3c30ac44e9e60b18595c82a4b04e2
Author(s)
Bandurin, Denis A.
Shytov, Andrey V.
Levitov, Leonid
Kumar, Roshan Krishna
Berdyugin, Alexey I.
Ben Shalom, Moshe
Grigorieva, Irina V.
Geim, Andre K.
Falkovich, Gregory
Date Issued
October 2018
Journal
Nature Communications
Publisher
Springer Nature
Citation
Bandurin, Denis A., Andrey V. Shytov, Leonid S. Levitov, Roshan Krishna Kumar, Alexey I. Berdyugin, Moshe Ben Shalom, Irina V. Grigorieva, Andre K. Geim, and Gregory Falkovich. “Fluidity Onset in Graphene.” Nature Communications 9, no. 1 (October 31, 2018). © 2018, The Author(s).
Version
Final published version
Abstract
Viscous electron fluids have emerged recently as a new paradigm of strongly-correlated electron transport in solids. Here we report on a direct observation of the transition to this long-sought-for state of matter in a high-mobility electron system in graphene. Unexpectedly, the electron flow is found to be interaction-dominated but non-hydrodynamic (quasiballistic) in a wide temperature range, showing signatures of viscous flows only at relatively high temperatures. The transition between the two regimes is characterized by a sharp maximum of negative resistance, probed in proximity to the current injector. The resistance decreases as the system goes deeper into the hydrodynamic regime. In a perfect darkness-before-daybreak manner, the interaction-dominated negative response is strongest at the transition to the quasiballistic regime. Our work provides the first demonstration of how the viscous fluid behavior emerges in an interacting electron system.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1038/S41467-018-07004-4
