Hund's Rule for Composite Fermions

Details Hund's Rule for Composite Fermions Hund's Rule for Composite Fermions

1993-12-22

arxiv.org/abs/cond-mat/9312090v1

Physics

Condensed Matter

10 pages, revtex

Scientific paper

10.1103/PhysRevB.49.5085

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 $4/3>\nu>2/3$.

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