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Phys Rev Lett. 2014 Dec 5;113(23):235901. Epub 2014 Dec 2.

Corbino disk viscometer for 2D quantum electron liquids.

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NEST, Istituto Nanoscienze-CNR and Scuola Normale Superiore, I-56126 Pisa, Italy.
Department of Physics and Astronomy, University of Missouri, Columbia, Missouri 65211, USA.


The shear viscosity of a variety of strongly interacting quantum fluids, ranging from ultracold atomic Fermi gases to quark-gluon plasmas, can be accurately measured. On the contrary, no experimental data exist, to the best of our knowledge, on the shear viscosity of two-dimensional quantum electron liquids hosted in a solid-state matrix. In this work we propose a Corbino disk device, which allows a determination of the viscosity of a quantum electron liquid from the dc potential difference that arises between the inner and the outer edge of the disk in response to an oscillating magnetic flux.

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