標題: Reentrant Melting of a Classical Quasi-One-Dimensional Wigner Crystal on the Surface of Liquid Helium
作者: Rees, David G.
Ikegami, Hiroki
Kono, Kimitoshi
物理研究所
Institute of Physics
關鍵字: electrons on helium;reentrant melting;Wigner crystal;quasi-one-dimensional;microchannel
公開日期: 1-Dec-2013
摘要: We present transport measurements of electrons on the surface of liquid helium confined to a microscopic channel, the effective width of which can be controlled electrostatically. Above 1 K the electron system is liquid-like and the conductance varies smoothly with the channel width. At lower temperatures the system forms a classical quasi-one-dimensional Wigner crystal ( WC). Close to the WC melting temperature, the current oscillates as the channel width is varied, due to reentrant melting as recently reported [H. Ikegami, H. Akimoto, D. G. Rees, and K. Kono: Phys. Rev. Lett. 109 ( 2012) 236802]. In the WC regime we observe Bragg-Cherenkov ripplon scattering, a signature of strong spatial electron order, for both the widely open channel and the single electron chain.
URI: http://dx.doi.org/10.7566/JPSJ.82.124602
http://hdl.handle.net/11536/147671
ISSN: 0031-9015
DOI: 10.7566/JPSJ.82.124602
期刊: JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
Volume: 82
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