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Related Concept Videos

Magnetic Field of a Solenoid01:18

Magnetic Field of a Solenoid

A solenoid is a conducting wire coated with an insulating material, wound tightly in the form of a helical coil. The magnetic field due to a solenoid is the vector sum of the magnetic fields due to its individual turns. Therefore, for an ideal solenoid, the magnetic field within the solenoid is directly proportional to the number of turns per unit length and the current. Conversely, the magnetic field outside the solenoid is zero.
Consider a solenoid with 100 turns wrapped around a cylinder of...
Torque On A Current Loop In A Magnetic Field01:13

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Faraday Disk Dynamo01:23

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Toroids01:27

Toroids

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Magnetic Vector Potential01:15

Magnetic Vector Potential

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Related Experiment Video

Updated: May 13, 2026

Magnetically Induced Rotating Rayleigh-Taylor Instability
06:42

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Published on: March 3, 2017

Spin torque-generated magnetic droplet solitons.

S M Mohseni1, S R Sani, J Persson

  • 1Materials Physics, School of Information and Communication Technology, KTH Royal Institute of Technology, Kista, Sweden.

Science (New York, N.Y.)
|March 16, 2013
PubMed
Summary

Researchers observed magnetic droplet solitons, a rare magnetic analog of dissipative solitons, using spin transfer torque. These solitons exhibit complex dynamics and can be controlled by current and magnetic fields for spintronics applications.

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Area of Science:

  • Condensed Matter Physics
  • Spintronics
  • Nonlinear Dynamics

Background:

  • Dissipative solitons are nonlinear phenomena observed in various systems.
  • Experimental observation of magnetic analogs of dissipative solitons has been challenging.
  • Perpendicular magnetic anisotropy (PMA) thin films are crucial for spintronic devices.

Purpose of the Study:

  • To experimentally observe and characterize magnetic droplet solitons.
  • To investigate the dynamical properties of these magnetic solitons.
  • To explore potential applications in spintronics and magnonics.

Main Methods:

  • Utilized spin transfer torque beneath a nanocontact on a PMA magnetic thin film.
  • Employed micromagnetic simulations to analyze soliton dynamics.
  • Investigated control mechanisms using electrical current and magnetic fields.

Main Results:

  • Successfully generated dissipative magnetic droplet solitons.
  • Observed diverse dynamical behaviors including oscillatory motion, spinning, and breather states.
  • Demonstrated controllability of the droplet solitons via current and magnetic fields.

Conclusions:

  • The study reports the first experimental observation of magnetic droplet solitons.
  • These solitons exhibit rich and controllable dynamics.
  • Potential applications include advanced spintronic, magnonic, and domain-wall devices.