Research output: Contribution to Journal/Magazine › Comment/debate › peer-review
<mark>Journal publication date</mark> | 15/03/1994 |
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<mark>Journal</mark> | Physical review B |
Issue number | 11 |
Volume | 49 |
Number of pages | 4 |
Pages (from-to) | 7774-7777 |
Publication Status | Published |
<mark>Original language</mark> | English |
The Wigner crystal of electrons in a couple of two-dimensional layers in semiconductor structures is shown to form a two-component lattice and to possess a specific excitation, namely, an optical phonon mode. The calculated frequencies of optical magnetophonons in the magnetically frozen double-layer Wigner crystal demonstrate exponential dependence on the interlayer spacing and electronic density, and we guess that their observation can give a direct indication of the crystalline ordering in the magnetic freeze-out regime.