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  • Ellis PRB 45 13765 1992

    Rights statement: © 1992 The American Physical Society

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Magneto-optical determination of the electron-solid phase-boundary

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<mark>Journal publication date</mark>15/06/1992
<mark>Journal</mark>Physical review B
Issue number23
Number of pages4
Pages (from-to)13765-13768
Publication StatusPublished
<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.

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© 1992 The American Physical Society