Nanomechanical Detection of Vortices in an Electron Fluid.

Authors

Andrey A Shevyrin, Askhat K Bakarov, Arthur G Pogosov

Published in

Physical review letters. Volume 137. Issue 11. Pages 116302. Sep 11, 2026.

Abstract

Electron vortices are an expected manifestation of viscosity, yet their detection remains challenging. We introduce a nanomechanical paradigm: a vortex in a suspended resonator generates a magnetic moment that, in an in-plane field, drives vibrations via magnetic torque. Using a comparative design with a reference device where vortices are suppressed, we provide unambiguous identification of the circulating flow. We detect ballistic and hydrodynamic vortices and trace their temperature crossover. Our work establishes nanomechanics as a direct force-sensing platform for electron hydrodynamics.

PMID:
42789833
Bibliographic data and abstract were imported from PubMed on 26 Sep 2026.

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