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Direct Observation of Composite Fermions and Their Fully-Spin-Polarized Fermi Sea near ν=5 /2

Author(s): Hossain, MS; Ma, MK; Mueed, MA; Pfeiffer, LN; West, KW; et al

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dc.contributor.authorHossain, MS-
dc.contributor.authorMa, MK-
dc.contributor.authorMueed, MA-
dc.contributor.authorPfeiffer, LN-
dc.contributor.authorWest, KW-
dc.contributor.authorBaldwin, KW-
dc.contributor.authorShayegan, Mansour-
dc.date.accessioned2021-10-08T20:17:10Z-
dc.date.available2021-10-08T20:17:10Z-
dc.date.issued2018en_US
dc.identifier.citationHossain, MS, Ma, MK, Mueed, MA, Pfeiffer, LN, West, KW, Baldwin, KW, Shayegan, M. (2018). Direct Observation of Composite Fermions and Their Fully-Spin-Polarized Fermi Sea near ν=5 /2. Physical Review Letters, 120 (10.1103/PhysRevLett.120.256601en_US
dc.identifier.urihttp://arks.princeton.edu/ark:/88435/pr19g4s-
dc.description.abstractThe enigmatic even-denominator fractional quantum Hall state at Landau level filling factor ν=5/2 is arguably the most promising candidate for harboring Majorana quasiparticles with non-Abelian statistics and, thus, of potential use for topological quantum computing. The theoretical description of the ν=5/2 state is generally believed to involve a topological p-wave pairing of fully-spin-polarized composite fermions through their condensation into a non-Abelian Moore-Read Pfaffian state. There is, however, no direct and conclusive experimental evidence for the existence of composite fermions near ν=5/2 or for an underlying fully-spin-polarized Fermi sea. Here, we report the observation of composite fermions very near ν=5/2 through geometric resonance measurements and find that the measured Fermi wave vector provides direct demonstration of a Fermi sea with full spin polarization. This lends crucial credence to the model of 5/2 fractional quantum Hall effect as a topological p-wave paired state of composite fermions.en_US
dc.language.isoen_USen_US
dc.relation.ispartofPhysical Review Lettersen_US
dc.rightsAuthor's manuscripten_US
dc.titleDirect Observation of Composite Fermions and Their Fully-Spin-Polarized Fermi Sea near ν=5 /2en_US
dc.typeJournal Articleen_US
dc.identifier.doidoi:10.1103/PhysRevLett.120.256601-
pu.type.symplectichttp://www.symplectic.co.uk/publications/atom-terms/1.0/journal-articleen_US

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