Neutral Fermions at $ν=1/2$

Details Neutral Fermions at $ν=1/2$ Neutral Fermions at $ν=1/2$

1997-09-22

arxiv.org/abs/cond-mat/9709233v4

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

An error in Eq.(11) is corrected

Scientific paper

We present a particle-hole symmetric theory for a two-dimensional electron gas at filling factor one half. In this theory, elementary excitations are dipole-like fermions floating on top of the $\nu=1/2$ boson quantum Hall liquid. In the absence of disorder these dipoles can form a Fermi-liquid. Disorder can break them apart and drive the ground state into a quantum critical state.

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