Incompressible paired Hall state, stripe order and the composite fermion liquid phase in half-filled Landau levels

Details Incompressible paired Hall state, stripe order and the composite fermion liquid phase in half-filled Landau levels Incompressible paired Hall state, stripe order and the composite fermion liquid phase in half-filled Landau levels

1999-06-09

arxiv.org/abs/cond-mat/9906137v2

Physical Review Letters 84, 4685 (2000)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Replaced with the published version which has a new title and some other chages

Scientific paper

10.1103/PhysRevLett.84.4685

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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