Quasiparticle Tunneling in the Fractional Quantum Hall State at ν= 5/2

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dc.creatorRadu, Iuliana P.
dc.creatorMiller, J. B.
dc.creatorMarcus, C. M.
dc.creatorKastner, M. A.
dc.creatorPfeiffer, L. N.
dc.creatorWest, K. W.
dc.date2008-03-25
dc.date.accessioned2026-07-07T09:39:14Z
dc.date.available2026-07-07T09:39:14Z
dc.descriptionTheory predicts that quasiparticle tunneling between the counter-propagating edges in a fractional quantum Hall state can be used to measure the effective quasiparticle charge e* and dimensionless interaction parameter g, and thereby characterize the many-body wavefunction describing the state. We report measurements of quasiparticle tunneling in a high mobility GaAs two dimensional electron system in the fractional quantum Hall state at nu=5/2 using a gate-defined constriction to bring the edges close together. We find the dc-bias peaks in the tunneling conductance at different temperatures collapse onto a single curve when scaled, in agreement with weak tunneling theory. Various models for the ν=5/2 state predict different values for g. Among these models, the non-abelian states with e*=1/4 and g=1/2 are most consistent with the data.
dc.descriptionsupporting material: http://marcuslab.harvard.edu/Radu_SOMs.pdf
dc.identifierhttps://arxiv.org/abs/0803.3530
dc.identifierhttp://arxiv.org/abs/0803.3530
dc.identifierScience 320, 899 (2008).
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/161091
dc.subjectMesoscale and Nanoscale Physics
dc.titleQuasiparticle Tunneling in the Fractional Quantum Hall State at ν= 5/2
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