Theory of the Half-Polarized Quantum Hall States
V. M. Apalkov, T. Chakraborty, P. Pietilainen, K. Niemela
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 ν= 2/3 and ν= 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.
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