Rights statement: © 1992 The American Physical Society
Final published version, 213 KB, PDF document
Research output: Contribution to Journal/Magazine › Comment/debate › peer-review
<mark>Journal publication date</mark> | 15/06/1992 |
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<mark>Journal</mark> | Physical review B |
Issue number | 23 |
Volume | 45 |
Number of pages | 4 |
Pages (from-to) | 13765-13768 |
Publication Status | Published |
<mark>Original language</mark> | English |
We have obtained a two-dimensional electron-solid phase diagram in the extreme magnetic quantum limit by studying the temperature dependence of the radiative recombination of electrons in a GaAs/AlxGa1-xAs heterojunction with holes bound to a delta-layer, 250 A away in the GaAs, of Be acceptors. The low-energy shoulder to the luminescence line, indicating the presence of the electron solid, is seen to disappear at a filling-factor-dependent critical temperature. We observe no shoulder above a filling factor of 0.25, and the critical temperature falls to below 0.4 K at filling factors 1/5 and 1/7.