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

Dissipationless transport in low-density bilayer systems

Stern1, Das Sarma S, Fisher

  • 1Department of Condensed Matter Physics, Weizmann Institute, Rehovot 76100, Israel.

Physical Review Letters
|October 4, 2000
PubMed
Summary

Researchers observed an XY isospin-ordered ferromagnetic phase in bilayer electronic systems, which acts as a superfluid for opposing layer currents. This phase persists even with weak disorder at zero magnetic field, suggesting robust superfluidity in low-density systems.

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

A Mechanistic Study of the Dihydroflavin Reductive Cleavage of the Dihydroflavin-Tetrahydronaphthalene Epoxide Adducts.

Bioorganic chemistry·2001
Same author

Interpreting the odds.

Critical care (London, England)·2000
Same author

Candiduria: When and How to Treat It.

Current infectious disease reports·2000
Same author

Extremal-point densities of interface fluctuations

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics·2000
Same author

Coexistence and criticality in size-asymmetric hard-core electrolytes

Physical review letters·2000
Same author

Where is the luttinger liquid in one-dimensional semiconductor quantum wire structures?

Physical review letters·2000

Area of Science:

  • Condensed matter physics
  • Quantum Hall effect
  • Bilayer electronic systems

Background:

  • Layer index in bilayer systems can represent isospin-1/2.
  • An XY isospin-ordered ferromagnetic phase is known in quantum Hall systems.
  • This phase is predicted at zero magnetic field and low density.

Purpose of the Study:

  • To investigate the existence and properties of an XY isospin-ordered ferromagnetic phase at zero magnetic field.
  • To determine if superfluidity in this phase is robust against weak disorder.
  • To identify experimental signatures for detecting this phase.

Main Methods:

  • Theoretical prediction and analysis of bilayer electronic systems.
  • Examination of quantum Hall systems for analogous phases.

Related Experiment Videos

  • Analysis of the impact of weak disorder on the gapless system at B=0.

    • Main Results:

    • The XY isospin-ordered ferromagnetic phase is predicted to exist at zero magnetic field and low density.
    • This phase exhibits superfluidity for opposite currents in the two layers.
    • Superfluidity is not destroyed by weak disorder, which generates a random gauge field in the quantum Hall case.

    Conclusions:

    • The predicted XY isospin-ordered ferromagnetic phase is a robust superfluid at zero magnetic field.
    • Experimental detection may be possible through Coulomb drag and collective mode measurements.