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

Current-induced nanomagnet dynamics for magnetic fields perpendicular to the sample plane.

S I Kiselev1, J C Sankey, I N Krivorotov

  • 1Cornell University, Ithaca, New York 14853, USA.

Physical Review Letters
|August 25, 2004
PubMed
Summary

We measured high-frequency magnetic dynamics in nanopillar devices using spin-polarized currents. Our findings rigorously test the theory of spin-transfer torques, revealing distinct precessional and static magnetic states.

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

Management of osteoporosis in general practice: a cross-sectional survey of primary care practitioners in Spain.

Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA·2004
Same author

Two cases of tetrasomy 9p syndrome with tissue limited mosaicism.

American journal of medical genetics. Part A·2004
Same author

Well diffusion for antifungal susceptibility testing.

International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases·2003
Same author

Differential effect of fetal, neonatal and treatment variables on neurodevelopment in infants with congenital hypothyroidism.

Hormone research·2003
Same author

Environmental performance review and cost analysis of MSW landfilling by baling-wrapping technology versus conventional system.

Waste management (New York, N.Y.)·2003
Same author

Neither folic nor folinic acid normalize homocysteine levels in hemodialysis patients.

Clinical nephrology·2003

Area of Science:

  • Spintronics
  • Condensed Matter Physics
  • Materials Science

Background:

  • Spin-polarized currents can excite magnetic dynamics in nanomaterials.
  • Understanding these dynamics is crucial for developing novel spintronic devices.
  • Spin-transfer torques are a key mechanism in spin-polarized current-driven magnetism.

Purpose of the Study:

  • To investigate high-frequency magnetic dynamics in Co/Cu/NiFe nanopillar devices.
  • To explore the influence of current and magnetic field on these dynamics.
  • To rigorously test the theory of spin-transfer torques using experimental data and simulations.

Main Methods:

  • Electrical measurements of Co/Cu/NiFe nanopillar devices.
  • Excitation of magnetic dynamics using spin-polarized currents.

Related Experiment Videos

  • Application of magnetic fields perpendicular to the sample layers.
  • Numerical simulations for comparison with experimental results.

    • Main Results:

    • Detailed dynamical phase diagrams were mapped as a function of current and magnetic field.
    • Several distinguishable precessional magnetic modes were observed.
    • Static magnetic states were identified alongside dynamic modes.
    • Experimental results were compared with numerical simulations to validate theoretical models.

    Conclusions:

    • The study provides experimental evidence of various magnetic dynamics driven by spin-polarized currents.
    • The findings offer rigorous validation for the theory of spin-transfer torques.
    • The observed precessional and static magnetic states contribute to understanding spintronic device behavior.