Deconfinement and Dissipation in Quantum Hall Josephson Tunneling

H. A. Fertig, Joseph P. Straley

Research output: Contribution to journalArticlepeer-review

37 Scopus citations


The zero-bias tunneling resonance in quantum Hall bilayer systems is investigated via numerical simulations of the classical two-dimensional [Formula presented] model with a symmetry-breaking field. Disorder is included in the model and is shown to nucleate strings of overturned spins proliferated through the system, with unpaired vortices and antivortices at their end points. This string glass state supports low-energy excitations which lead to anomalously large dissipation in tunneling, as observed in experiment. The effect of an in-plane magnetic field is discussed.

Original languageEnglish
JournalPhysical Review Letters
Issue number4
StatePublished - Jul 25 2003

ASJC Scopus subject areas

  • Physics and Astronomy (all)


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