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Quasiparticles in the 111 state and its compressible ancestors

M. Y. Veillette·L. Balents·Matthew P. A. Fisher
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Abstract

We investigate the relationship of the spontaneously inter-layer coherent ``111''state of quantum Hall bilayers at total filling factor ν=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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M. Y. Veillette, L. Balents, Matthew P. A. Fisher. 2001-05-05. Quasiparticles in the 111 state and its compressible ancestors. https://doi.org/10.1103/physrevb.66.155401

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