Quasiparticles in the 111 state and its compressible ancestors

Details Quasiparticles in the 111 state and its compressible ancestors Quasiparticles in the 111 state and its compressible ancestors

2001-05-05

arxiv.org/abs/cond-mat/0105118v1

Phys. Rev. B 66, 155401 (2002)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 Pages, RevTex

Scientific paper

10.1103/PhysRevB.66.155401

We investigate the relationship of the spontaneously inter-layer coherent ``111''state of quantum Hall bilayers at total filling factor \nu=1 to ``mutual'' composite fermions, in which vortices in one layer are bound to electrons in the other. Pairing of the mutual composite fermions leads to the low-energy properties of the 111 state, as we explicitly demonstrate using field-theoretic techniques. Interpreting this relationship as a mechanism for inter-layer coherence leads naturally to two candidate states with non-quantized Hall conductance: the mutual composite Fermi liquid, and an inter-layer coherent charge e Wigner crystal. The experimental behavior of the interlayer tunneling conductance and resistivity tensors are discussed for these states.

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