Journal
PHYSICAL REVIEW LETTERS
Volume 106, Issue 18, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.106.186802
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Funding
- NSF [DMR-0955707]
- DARPA
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We present the first numerical computation of the neutral fermion gap, Delta(F), in the nu = 5/2 quantum Hall state, which is analogous to the energy gap for a Bogoliubov-de Gennes quasiparticle in a superconductor. We find Delta(F) approximate to 0: 027 e(2)/el(0), comparable to the charge gap. We also deduce an effective Fermi velocity nu F for neutral fermions from the low-energy spectra for odd numbers of electrons, and thereby obtain a correlation length zeta(F) = nu(F)/Delta(F) approximate to 1.3l(0). We comment on implications for experiments, topological quantum information processing, and electronic mechanisms of superconductivity.
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