Half-Integral Spin-Singlet Quantum Hall Effect

Details Half-Integral Spin-Singlet Quantum Hall Effect Half-Integral Spin-Singlet Quantum Hall Effect

1993-10-11

arxiv.org/abs/cond-mat/9310020v1

Physics

Condensed Matter

Latex 13 pages, 3 figures upon request

Scientific paper

10.1103/PhysRevB.48.15245

We provide numerical evidence that the ground state of a short range interaction model at $\nu=1/2$ 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 $\nu=1/2$ if this state became the global ground state.

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