Dual Order Parameter for the Nodal Liquid

Details Dual Order Parameter for the Nodal Liquid Dual Order Parameter for the Nodal Liquid

1998-11-17

arxiv.org/abs/cond-mat/9811236v1

Physics

Condensed Matter

Strongly Correlated Electrons

16 pages, 2 figures

Scientific paper

10.1103/PhysRevB.60.1654

The guiding conception of vortex-condensation-driven Mott insulating behavior is central to the theory of the nodal liquid. We amplify our earlier description of this idea and show how vortex condensation in 2D electronic systems is a natural extension of 1D Mott insulating and 2D bosonic Mott insulating behavior. For vortices in an underlying superconducting pair field, there is an important distinction between the condensation of flux hc/2e and flux hc/e vortices. The former case leads to spin-charge confinement, exemplified by the band insulator and the charge-density-wave. In the latter case, spin and charge are liberated leading directly to a 2D Mott insulator exhibiting *spin-charge separation*. Possible upshots include not only the nodal liquid, but also a novel undoped antiferromagnetic insulating phase with gapped excitations exhibiting spin-charge separation.

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