✦ LIBER ✦

Temperature dependence of the coupled electron–ripplon resonance spectrum of electron crystal over liquid helium

✍ Scribed by V.E. Syvokon; Yu. V. Kireyev

Publisher: Elsevier Science
Year: 2005
Tongue: English
Weight: 105 KB
Volume: 120
Category: Article
ISSN: 0167-7322
DOI: 10.1016/j.molliq.2004.07.067

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✦ Synopsis

Spectra of coupled electron-ripplon oscillation of two-dimensional (2D) Wigner crystal with the surface electron density n s =6.4Â10 8 cm À2 (melting temperature of 0.58 K) are measured under conditions of both complete and noncomplete screening of the holding electric field in temperature range 0.08-0.4 K. The frequencies of the resonances are compared with the results of calculation in the frameworks of a self-consistent theory by Monarkha and Shikin. It is shown that the amplitude of the (0,1) resonance mode tends to 0 as temperature reaches the melting temperature.

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