Half-polarized quantum hall states

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 polarizat...

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Bibliographic Details
Published in:Physical review letters 2001-02, Vol.86 (7), p.1311-1314
Main Authors: Apalkov, V M, Chakraborty, T, Pietiläinen, P, Niemelä, K
Format: Article
Language:English
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Summary: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 nonzero values of exciton angular momentum.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.86.1311