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 Concept Videos

The Hall Effect01:30

The Hall Effect

2.2K
Edwin H. Hall, in the year 1879, devised an experiment that could be used to identify the polarity of the predominant charge carriers in a conducting material. From a historical perspective, this experiment was the first to demonstrate that the charge carriers in most metals are negative.
2.2K
Torque On A Current Loop In A Magnetic Field01:13

Torque On A Current Loop In A Magnetic Field

3.8K
The most common application of magnetic force on current-carrying wires is in electric motors. These consist of loops of wire, which are placed between the magnets with a magnetic field. When current flows through the loops, the magnetic field applies torque, which causes the shaft to rotate, thus converting electrical energy to mechanical energy.
Consider a rectangular current-carrying loop containing N turns of wire, placed in a uniform magnetic field. The net force on a current-carrying loop...
3.8K
Diamagnetism01:26

Diamagnetism

2.4K
Materials consisting of paired electrons have zero net magnetic moments. However, when these materials are placed under an external magnetic field, the moments opposite to the field are induced. Such materials are called diamagnets. Diamagnetism is the response of the diamagnets when placed in an external magnetic field.
Diamagnetism was discovered by Anton Brugmans in 1778 when he observed that bismuth gets repelled by magnetic fields, thus theorizing that diamagnets get repelled by magnets....
2.4K
Atomic Nuclei: Nuclear Magnetic Moment00:59

Atomic Nuclei: Nuclear Magnetic Moment

1.0K
All atomic nuclei are positively charged. When they have a nonzero spin, they behave like rotating charges. As a consequence of their charge and spin, these nuclei generate a magnetic field (B). This, in turn, gives rise to a magnetic moment (μ), which is randomly oriented in the absence of an external magnetic field. When an external magnetic field (B0) is applied, the magnetic moment vectors can align with the field or against it in 2 + 1 orientations. A hydrogen nucleus, which is just a...
1.0K
Ferromagnetism01:31

Ferromagnetism

2.4K
Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...
2.4K
Paramagnetism01:30

Paramagnetism

2.5K
Paramagnets are materials with unpaired electrons that possess a finite magnetic moment. In the absence of a magnetic field, these moments are randomly oriented, and thus the net moment is zero. Under an external field, a torque acting on the moments tends to align them along the field's direction. However, the random thermal motion of electrons produces a torque opposite to the external field and tries to disorient the moments. These two competing effects align only a few moments along the...
2.5K

You might also read

Related Articles

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

Sort by
Same author

Controlling Magnon Interaction by a Nanoscale Switch.

ACS applied materials & interfaces·2021
Same author

Giant nonlinear damping in nanoscale ferromagnets.

Science advances·2019
Same author

Magnetization reversal driven by low dimensional chaos in a nanoscale ferromagnet.

Nature communications·2019
Same author

Spin-orbit torque driven by a planar Hall current.

Nature nanotechnology·2018
Same author

Injection locking of multiple auto-oscillation modes in a tapered nanowire spin Hall oscillator.

Scientific reports·2018
Same author

Tunable magnetization and damping of sputter-deposited, exchange coupled Py|Fe bilayers.

Scientific reports·2017

Related Experiment Video

Updated: Jun 2, 2025

Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials
10:36

Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials

Published on: January 21, 2016

10.5K

Anomalous Hall spin current drives self-generated spin-orbit torque in a ferromagnet.

Eric Arturo Montoya1,2, Xinyao Pei3, Ilya N Krivorotov4

  • 1Department of Physics and Astronomy, University of California, Irvine, CA, USA. eric.montoya@utah.edu.

Nature Nanotechnology
|January 15, 2025
PubMed
Summary

Researchers discovered a powerful self-generated spin-orbit torque in magnetic materials. This anomalous Hall torque can control magnetization, enabling energy-efficient devices like nano-oscillators and advancing spintronics.

More Related Videos

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
09:06

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

Published on: March 24, 2019

8.0K
Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
07:42

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

Published on: July 20, 2022

2.6K

Related Experiment Videos

Last Updated: Jun 2, 2025

Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials
10:36

Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials

Published on: January 21, 2016

10.5K
Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
09:06

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

Published on: March 24, 2019

8.0K
Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
07:42

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

Published on: July 20, 2022

2.6K

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Spintronics

Background:

  • Spin-orbit torques offer energy-efficient magnetization control for advanced electronic applications.
  • Current methods for generating spin-orbit torques face limitations in efficiency and applicability.

Purpose of the Study:

  • To discover and characterize a novel, self-generated spin-orbit torque in ferromagnetic conductors.
  • To explore the potential of this torque for novel spintronic devices and fundamental physics.

Main Methods:

  • Investigated anomalous Hall current effects in ferromagnetic conductors.
  • Quantified the magnitude and symmetry of the induced spin-orbit torque.
  • Demonstrated a microwave spin torque nano-oscillator driven by the anomalous Hall torque.

Main Results:

  • Discovered a giant spin-orbit torque originating from anomalous Hall current in ferromagnets.
  • The anomalous Hall torque is self-generated, acting on the magnetization that produces it.
  • The torque magnitude is sufficient to overcome magnetic damping, enabling nano-oscillator operation.

Conclusions:

  • The anomalous Hall torque presents a significant advancement in spin-orbit torque phenomena.
  • Its self-generated nature and large magnitude offer advantages over conventional spin Hall torques.
  • This discovery is crucial for developing next-generation spintronic devices and understanding spin transport.