Stick-Slip Motion of the Wigner Solid on Liquid Helium.
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 quantized 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 polaronlike decoupling dynamics.
NCTU-RIKEN Joint Research Laboratory, Institute of Physics, National Chiao Tung University, Hsinchu 300, Taiwan.|RIKEN CEMS, Wako 351-0198, Japan.
David G
DG
Rees
RIKEN CEMS, Wako 351-0198, Japan.|KFU-RIKEN Joint Research Laboratory, Institute of Physics, Kazan Federal University, Kazan 420008, Russia.
Niyaz R
NR
Beysengulov
NCTU-RIKEN Joint Research Laboratory, Institute of Physics, National Chiao Tung University, Hsinchu 300, Taiwan.|RIKEN CEMS, Wako 351-0198, Japan.|Department of Electrophysics, National Chiao Tung University, Hsinchu 300, Taiwan.
Juhn-Jong
JJ
Lin
NCTU-RIKEN Joint Research Laboratory, Institute of Physics, National Chiao Tung University, Hsinchu 300, Taiwan.|RIKEN CEMS, Wako 351-0198, Japan.|KFU-RIKEN Joint Research Laboratory, Institute of Physics, Kazan Federal University, Kazan 420008, Russia.
Kimitoshi
K
Kono