Confinement of fractional quantum Hall states in narrow conducting channels

R. L. Willett, M. J. Manfra, L. N. Pfeiffer, K. W. West

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


Confinement of small gapped fractional quantum Hall states facilitates quasiparticle manipulation and is an important step toward quasiparticle interference measurements. Demonstrated here is conduction through top gate defined, narrow channels in high density, ultrahigh mobility heterostructures. Transport evidence for the persistence of a correlated state at a filling fraction of 53 is shown in channels of 2 μm length but is gated to near 0.3 μm in width. The methods employed to achieve this confinement hold promise for interference devices proposed for studying potential non-Abelian statistics at a filling fraction of 52.

Original languageEnglish (US)
Article number052105
JournalApplied Physics Letters
Issue number5
StatePublished - 2007
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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