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Neutral Fermion Excitations in the Moore-Read State at Filling Factor ?=5/2

Möller, Gunnar, Wójs, Arkadiusz, Cooper, Nigel R (2011) Neutral Fermion Excitations in the Moore-Read State at Filling Factor ?=5/2. Physical Review Letters, 107 (3). 036803. ISSN 0031-9007. E-ISSN 1079-7114. (doi:10.1103/PhysRevLett.107.036803) (KAR id:55556)


We present evidence supporting the weakly paired Moore-Read phase in the half-filled second Landau level, focusing on some of the qualitative features of its excitations. Based on numerical studies, we show that systems with odd particle number at the flux N_\phi=2N-3 can be interpreted as a neutral fermion mode of one unpaired fermion, which is gapped. The mode is found to have two distinct minima, providing a signature that could be observed by photoluminescence. In the presence of two quasiparticles the same neutral fermion excitation is shown to be gapless, confirming expectations for non-Abelian statistics of the Ising model with degenerate fusion channels 1 and \psi.

Item Type: Article
DOI/Identification number: 10.1103/PhysRevLett.107.036803
Uncontrolled keywords: Physics of Quantum Materials
Subjects: Q Science > QC Physics > QC173.45 Condensed Matter
Divisions: Divisions > Division of Natural Sciences > Physics and Astronomy
Depositing User: Gunnar Moeller
Date Deposited: 25 Sep 2017 15:17 UTC
Last Modified: 16 Nov 2021 10:23 UTC
Resource URI: (The current URI for this page, for reference purposes)

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