33 / 168
Abstracts
P1.21
Melting and ordering of electrons on helium in a confined geometry
Beysengulov Niyaz(1,2), Rees David(2,3), Teranishi Yoshiaki(3), Tayurskii
Dmitrii(1,2), Lin Juhn-Jong(2,3), Kono Kimitoshi(1,2,3)
1) Kazan Federal University, Institute of Physics, KFU-RIKEN Joint Research
Laboratory, Kazan, 420008 Russia.
2) RIKEN CEMS, Wako 351-0198, Japan.
3) National Chiao Tung University, Institute of Physics, NCTU-RIKEN Joint
Research Laboratory, Hsinchu 300, Taiwan.
Low-dimensional electron systems exhibit the enhancement of electron
correlations when confined to narrow channels. Here we investigate the influence
of confinement on the ordering of a quasi-1D electron system on the surface of
liquid helium. We find that at weak confinement the melting of the Wigner Solid
(WS) is determined by 2D Kosterlitz- Thouless theory. By contrast, at stronger
confinement the melting of the WS depends on the confinement strength, as well
as electron density and temperature. As the electron row number
N
y
changes,
varying commensurability results in a modulation of the WS order, even when
N
y
is surprisingly large, which is confirmed by Monte Carlo simulations.
P1.22
Computer simulation of quasi-1D electron system in parabolic
confinement
Beysengulov Niyaz(1,2), Lysogorskiy Yurii(1), Chepelianskii Alexei(4), Rees
David(2,3), Kono Kimitoshi(1,2,3), Tayurskii Dmitrii(1,2)
1) Kazan Federal University, Institute of Physics, KFU-RIKEN Joint Research
Laboratory, Kazan, 420008 Russia.
2) RIKEN CEMS, Wako 351-0198, Japan.
3) National Chiao Tung University, Institute of Physics, NCTU-RIKEN Joint
Research Laboratory, Hsinchu 300, Taiwan.
4) Universit´e Paris-Sud, LPS, CNRS, UMR 8502, Orsay F-91405, France.
Electrons bound to the surface of liquid helium form a model system in which
the physics of strongly correlated particles interacting via Coulomb potential can
be investigated. Here we present molecular dynamic study of strongly correlated
electrons in an external parabolic confinement. We analyze the diffusion coefficient
as well as velocity autocorrelation function dependence on the commensurability of
Wigner Solid (WS). We show that melting of q1D-WS depends on the confinement
strength.
33