Low-frequency conductivity of a two-dimensional Wigner solid coupled to surface excitations of liquid helium
DOI (Low Temperature Physics):
https://doi.org/10.1063/1.1596801Ключові слова:
PACS: 67.40.Db, 73.20.-rАнотація
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
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Yu.P. Monarkha, Low-frequency conductivity of a two-dimensional Wigner solid coupled to surface excitations of liquid helium, Low Temp. Phys. 29, (2003) [Fiz. Nizk. Temp. 29, 910-921, (2003)] DOI: https://doi.org/10.1063/1.1596801.
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Низькоpозмірні та невпорядковані системи
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