Abstract
The exchange energy of a two-dimensional electron gas was evaluated exactly in the presence of a magnetic field when only the lowest Landau level is occupied fractionally.
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Isihara, A. Magnetic exchange energy of two-dimensional electrons. Z. Physik B - Condensed Matter 73, 15–16 (1988). https://doi.org/10.1007/BF01312149
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DOI: https://doi.org/10.1007/BF01312149