Theory of the Half-Polarized Quantum Hall States

Abstract

We report a theoretical analysis of the half-polarized quantum Hall states observed in a recent experiment. Our numerical results indicate that the ground state energy of the quantum Hall $\nu =2/3$ and $\nu =2/5$ states versus spin polarization has a downward cusp at half the maximal spin polarization. We map the two-component fermion system onto a system of excitons and describe the ground state as a liquid state of excitons with non-zero values of exciton angular momentum.

4 pages (RevTeX), 3 figures (PostScript), added references

References in corpus (1)

• A Composite Fermion Hofstader Problem: Partially Polarized Density Wave States in the 2/5 FQHE

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