Research output: Contribution to Journal/Magazine › Journal article › peer-review
<mark>Journal publication date</mark> | 19/02/1992 |
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<mark>Journal</mark> | Surface Science |
Issue number | 1-3 |
Volume | 263 |
Number of pages | 5 |
Pages (from-to) | 39-43 |
Publication Status | Published |
<mark>Original language</mark> | English |
We have studied the temperature and magnetic field dependence of the luminescence of a two-dimensional electron system in the extreme magnetic quantum limit. Analysis of the intensity variations of the shoulder that appears on the low-energy side of the lowest Landau level luminescence peak, attributed to the formation of a pinned Wigner crystal, has enabled us to construct an electron solid phase diagram. In the fractional quantum Hall regime, we observe clear maxima in the high- and low-energy halfwidths of the luminescence line around fractional occupancies 1/3, 1/5 and 1/7. This behaviour is consistent with a transition between two luminescence lines at the shifts.