Two-dimensional Wigner crystal of electrons on a helium film: Static and dynamical properties
- 1 July 1984
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 30 (1) , 159-165
- https://doi.org/10.1103/physrevb.30.159
Abstract
The interaction energy, phonon spectrum, and longitudinal and transverse sound velocity of a two-dimensional (2D) Wigner crystal are calculated within the harmonic approximation for different values of the thickness of the underlying helium film and for different types of substrates which support the He film. The phase diagram for Wigner crystallization is analyzed in terms of the Kosterlitz-Thouless-Halperin-Nelson theory of 2D melting.Keywords
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