2003/01/31 by H. A. Fertig, Joseph P. Straley · 2 citations
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.mes-hall #cond-mat.stat-mech #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.91.046806
published as Physical Review Letters 91, 046806 (2003) · 4 pages, 3 figures. Published version. Animations available at http://www.pa.uky.edu/~fertig/stringglass
openalex publication_date 2003/07/25 · arxiv created 2003/07/31 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The zero-bias tunneling resonance in quantum Hall bilayer systems is investigated via numerical simulations of the classical two-dimensional XY 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.