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Hund's Rule for Composite Fermions

J. K. Jain·X. G. Wu
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Abstract

We consider the ``fractional quantum Hall atom" in the vanishing Zeeman energy limit, and investigate the validity of Hund's maximum-spin rule for interacting electrons in various Landau levels. While it is not valid for {\em electrons} in the lowest Landau level, there are regions of filling factors where it predicts the ground state spin correctly {\em provided it is applied to composite fermions}. The composite fermion theory also reveals a ``self-similar" structure in the filling factor range $4/3>ν>2/3$.

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J. K. Jain, X. G. Wu. 1993-12-22. Hund's Rule for Composite Fermions. https://doi.org/10.1103/physrevb.49.5085

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