Stick-Slip Motion of the Wigner Solid on Liquid Helium

Abstract

We present time-resolved transport measurements of a Wigner solid (WS) on the surface of liquid Helium confined in a micron-scale channel. At rest, the WS is `dressed' by a cloud of quantised capillary waves (ripplons). Under a driving force, we find that repeated WS-ripplon decoupling leads to stick-slip current oscillations, the frequency of which can be tuned by adjusting the temperature, pressing electric field, or electron density. The WS on liquid He is a promising system for the study of polaron-like decoupling dynamics.

5 pages, 5 figures, and supplemental

References in corpus (2)

• Modeling friction: From nanoscale to mesoscale
• Tuning friction atom-by-atom in an ion-crystal simulator

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