Low-frequency conductivity of a two-dimensional Wigner solid coupled to surface excitations of liquid helium

Автор(и)

  • Yu.P. Monarkha B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Lenin Ave., Kharkov 61103, Ukraine

DOI:

https://doi.org/10.1063/1.1596801

Ключові слова:

PACS: 67.40.Db, 73.20.-r

Анотація

The line-shape and broadening of coupled phonon-ripplon resonances of Wigner-solid conductivity are studied using the memory function formalism. The analytic properties of the memory function permit coordinating the approximations of the secular equation for the coupled phonon-ripplon modes and the line-broadening of these resonances. Special attention is paid to the description of the strong-coupling regime realized for surface electrons on superfluid helium. For this case it is shown that the line-broadening is much smaller than and the line-shape is different from those found previously using the weak-coupling theory. Different theoretical approaches are compared with available experimental data.

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Опубліковано

2003-06-27

Як цитувати

(1)
Monarkha, Y. Low-Frequency Conductivity of a Two-Dimensional Wigner Solid Coupled to Surface Excitations of Liquid Helium. Fiz. Nizk. Temp. 2003, 29, 910-921.

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Низькоpозмірні та невпорядковані системи

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