Separation of spin and charge in paired spin-singlet quantum Hall states

Details Separation of spin and charge in paired spin-singlet quantum Hall states Separation of spin and charge in paired spin-singlet quantum Hall states

2001-02-05

arxiv.org/abs/cond-mat/0102072v2

Phys. Rev. B 65, 041305 (2002)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, uses revtex4

Scientific paper

10.1103/PhysRevB.65.041305

We propose a series of paired spin-singlet quantum Hall states, which exhibit a separation of spin and charge degrees of freedom. The fundamental excitations over these states, which have filling fraction \nu=2/(2m+1) with m an odd integer, are spinons (spin-1/2 and charge zero) or fractional holons (charge +/- 1/(2m+1) and spin zero). The braid statistics of these excitations are non-abelian. The mechanism for the separation of spin and charge in these states is topological: spin and charge excitations are liberated by binding to a vortex in a p-wave pairing condensate. We briefly discuss related, abelian spin-singlet states and possible transitions.

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