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Incompressible Paired Hall State, Stripe Order, and the Composite Fermion Liquid Phase in Half-Filled Landau Levels

2000; American Physical Society; Volume: 84; Issue: 20 Linguagem: Inglês

10.1103/physrevlett.84.4685

ISSN

1092-0145

Autores

E. H. Rezayi, F. D. M. Haldane,

Tópico(s)

Topological Materials and Phenomena

Resumo

We consider the two lowest Landau levels at half filling. In the higher Landau level (nu = 5/2), we find a first-order phase transition separating a compressible striped phase from a paired quantum Hall state, which is identified as the Moore-Read state. The critical point is very near the Coulomb potential and the transition can be driven by increasing the width of the electron layer. We find a much weaker transition (either second-order or a crossover) from pairing to the composite fermion Fermi-liquid behavior. A very similar picture is obtained for the lowest Landau level, but the transition point is not near the Coulomb potential.

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