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Half-Integral Spin-Singlet Quantum Hall Effect

L. Belkhir·X. G. Wu·J. K. Jain
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Abstract

We provide numerical evidence that the ground state of a short range interaction model at $ν=1/2$ is incompressible and spin-singlet for a wide range of repulsive interactions. Furthermore it is accurately described by a trial wave function studied earlier. For the Coulomb interaction we find that this wave function provides a good description of the lowest lying spin-singlet state, and propose that fractional quantum Hall effect would occur at $ν=1/2$ if this state became the global ground state.

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L. Belkhir, X. G. Wu, J. K. Jain. 1993-10-11. Half-Integral Spin-Singlet Quantum Hall Effect. https://doi.org/10.1103/physrevb.48.15245

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