Low Temperature Physics: 29, 725 (2003); https://doi.org/10.1063/1.1614177 (3 pages)
Физика Низких Температур: Том 29, Выпуск 9-10 (Сентябрь 2003), c. 967-969    ( к оглавлению , назад )

Conductivity of a 2D electron crystal over liquid helium in the region of coupled electron–ripplon resonances

Vitaliy Syvokon and Yuri Kovdrya

B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Lenin Ave., Kharkov 61103, Ukraine
E-mail: sivokon@ilt.kharkov.ua


The dependence of the coupled electron–ripplon oscillations spectrum of a 2D electron crystal over liquid helium on the holding electric field is studied at a temperature much lower than the temperature of melting. An analysis of the spectrum near the main resonance (0,1) allowed finding both the real and imaginary components of the crystal conductivity. The imaginary part of the conductivity is shown to be in good agreement with theoretical estimates. At the same time, additional theoretical and experimental studies are necessary to clear up the possible reasons for energy losses in the electron crystal.

67.70.+n - Films (including physical adsorption)
73.21.-b - Electron states and collective excitations in multilayers, quantum wells, mesoscopic, and nanoscale systems (for electron states in nanoscale materials, see 73.22.-f)
73.63.-b - Electronic transport in nanoscale materials and structures (see also 73.23.-b Electronic transport in mesoscopic systems)