Browsing by Author "Beysengulov, Niyaz R."

Now showing 1 - 2 of 2

Stick-Slip Motion of the Wigner Solid on Liquid Helium
(2016-05-16)
Rees, David G.
;
Beysengulov, Niyaz R.
;
Lin, Juhn-Jong
;
Kono, Kimitoshi
;
電子物理學系
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.
Structural order and melting of a quasi-one-dimensional electron system
(2016-07-29)
Rees, David G.
;
Beysengulov, Niyaz R.
;
Teranishi, Yoshiaki
;
Tsao, Chun-Shuo
;
Yeh, Sheng-Shiuan
We investigate the influence of confinement on the positional order of a quasi-1D electron system trapped on the surface of liquid helium. We find evidence that the melting of the Wigner solid (WS) depends on the confinement strength, as well as electron density and temperature. A reentrant solid-liquid-solid transition is observed for increasing electron density under constant electrostatic confinement. As the electron row number N-y changes, varying commensurability results in a modulation of the WS order, even when N-y is large (several tens). This is confirmed by Monte Carlo simulations.