Quasiparticles in the 111 state and its compressible ancestors

Veillette, M. Y.; Balents, L.; Fisher, Matthew P. A.

Quasiparticles in the 111 state and its compressible ancestors

Authors

Veillette, M. Y.

Balents, L.

Fisher, Matthew P. A.

Description

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.
4 Pages, RevTex