Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Coherence network in the quantum Hall bilayer.

H A Fertig1, Ganpathy Murthy

  • 1Department of Physics, Indiana University, Bloomington, Indiana 47405, USA.

Physical Review Letters
|October 26, 2005
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Direct Visualization of Canted Magnetization and Topological Charges in Self-Intercalated van der Waals Magnet Cr<sub>1+δ</sub>Te<sub>2</sub> with Hidden Structural Phases.

ACS applied materials & interfaces·2026
Same author

Tunable Hidden Altermagnetic Spin Splitting in Layered Ruddlesden-Popper Oxides.

Nano letters·2026
Same author

Controlled Vapor-Liquid-Solid Growth of Long and Remarkably Thin Pb<sub>1-</sub>Sn<sub></sub>Te Nanowires with Strain-Tunable Ferroelectric Phase Transition.

ACS applied materials & interfaces·2024
Same author

Perpendicular electric field drives Chern transitions and layer polarization changes in Hofstadter bands.

Nature communications·2022
Same author

Coexistence of Canted Antiferromagnetism and Bond Order in ν=0 Graphene.

Physical review letters·2022
Same author

Dirac Magic and Lifshitz Transitions in AA-Stacked Twisted Multilayer Graphene.

Physical review letters·2022
Same journal

Erratum: Spectroscopy and Ground-State Transfer of Ultracold Bosonic ^{39}K^{133}Cs Molecules [Phys. Rev. Lett. 135, 203401 (2025)].

Physical review letters·2026
Same journal

Erratum: Lifetime of the ^{2}F_{7/2} Level in Yb^{+} for Spontaneous Emission of Electric Octupole Radiation [Phys. Rev. Lett. 127, 213001 (2021)].

Physical review letters·2026
Same journal

Laser-Plasma Based Seeded Free Electron Laser in the High-Gain Regime.

Physical review letters·2026
Same journal

Parent Hamiltonians for Stabilizer Quantum Many-Body Scars.

Physical review letters·2026
Same journal

Properties of Heavy Cosmic Nuclei Phosphorus, Chlorine, Argon, Potassium, and Calcium: Results from the Alpha Magnetic Spectrometer.

Physical review letters·2026
Same journal

Role of Spin-Isospin Symmetries in Nuclear β-Decays.

Physical review letters·2026
See all related articles

Quantum Hall bilayers exhibit imperfect superfluidity due to a disorder-induced coherence network. This network, featuring vortex-antivortex pairs and a vortex liquid state, explains observed transport properties.

Area of Science:

  • Condensed Matter Physics
  • Quantum Phenomena

Background:

  • Experiments reveal imperfect two-dimensional superfluidity in quantum Hall bilayers near filling factor 1.
  • This superfluidity is characterized by nearly dissipationless transport at non-zero temperatures, observed in both counterflow resistance and interlayer tunneling.

Purpose of the Study:

  • To explain the observed imperfect superfluidity in quantum Hall bilayers.
  • To propose a theoretical model involving a coherence network and vortex dynamics.

Main Methods:

  • Theoretical analysis using a coherence network model.
  • Renormalization group analysis to describe the system as a vortex liquid.
  • Investigating the dynamics of network nodes and vortex hops.

Main Results:

Related Experiment Videos

  • The behavior is explained by a disorder-induced coherence network with incompressible regions and vortex-antivortex pair puddles.
  • Renormalization group analysis confirms the system can be described as a vortex liquid.
  • Network node dynamics lead to power-law temperature dependence in tunneling resistance.
  • Thermally activated vortex hops govern counterflow resistance.

Conclusions:

  • The coherence network model successfully explains the imperfect superfluidity in quantum Hall bilayers.
  • Disorder plays a crucial role in forming the coherent state and enabling superfluidity.
  • The interplay between network dynamics and vortex behavior dictates the transport properties.