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

Vortex motion rectification in Josephson junction arrays with a ratchet potential.

D E Shalóm1, H Pastoriza

  • 1Centro Atómico Bariloche, Comisión Nacional de Energía Atómica, Av. Bustillo 9500, R84002AGP S. C. de Bariloche, Argentina. shalom@cab.cnea.gov.ar

Physical Review Letters
|May 21, 2005
PubMed
Summary

We studied vortex motion in Josephson junction arrays using electrical measurements. Maximum efficiency was observed when vortex density matched the ratchet potential, indicating collective motion and vortex interactions influence the ratchet effect.

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

Probing gigahertz coherent acoustic phonons in TiO<sub>2</sub> mesoporous thin films.

Photoacoustics·2023
Same author

Size-Induced Depression of First-Order Transition Lines and Entropy Jump in Extremely Layered Nanocrystalline Vortex Matter.

Physical review letters·2015
Same author

Magnetoresistance effect in (La, Sr)MnO3 bicrystalline films.

Journal of physics. Condensed matter : an Institute of Physics journal·2011
Same author

Cryogenic transimpedance amplifier for micromechanical capacitive sensors.

The Review of scientific instruments·2008
Same author

Commensurability and stability in nonperiodic systems.

Proceedings of the National Academy of Sciences of the United States of America·2006

Area of Science:

  • Condensed Matter Physics
  • Superconductivity
  • Mesoscopic Physics

Background:

  • Josephson junction arrays are crucial for studying collective phenomena in superconductors.
  • Ratchet potentials enable directed motion of particles or vortices using asymmetric potentials and external forces.
  • Understanding vortex dynamics is key to controlling superconducting devices.

Purpose of the Study:

  • To investigate the rectified motion of vortices in engineered ratchet potentials.
  • To determine the relationship between vortex density, driving force, and ratchet efficiency.
  • To explore the role of vortex-vortex interactions in directed vortex transport.

Main Methods:

  • Electrical transport measurements were employed to probe vortex motion.

Related Experiment Videos

  • Overdamped Josephson junction arrays with engineered ratchet potentials were utilized.
  • Varying vortex density and driving force allowed for systematic analysis.

    • Main Results:

    • A maximum in rectified voltage efficiency was observed near a matching condition between vortex density and ratchet potential period.
    • This maximum indicates the onset of collective vortex motion.
    • Vortex current reversals were detected, demonstrating the influence of vortex-vortex interactions on the ratchet effect.

    Conclusions:

    • Collective vortex motion significantly enhances ratchet efficiency in Josephson junction arrays.
    • Vortex-vortex interactions play a critical role in determining the direction and magnitude of rectified vortex transport.
    • These findings offer insights for designing superconducting devices with controlled vortex dynamics.