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

Ferromagnetism01:31

Ferromagnetism

3.0K
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...
3.0K
Magnetic Fields01:27

Magnetic Fields

7.1K
A moving charge or a current creates a magnetic field in the surrounding space, in addition to its electric field. The magnetic field exerts a force on any other moving charge or current that is present in the field. Like an electric field, the magnetic field is also a vector field. At any position, the direction of the magnetic field is defined as the direction in which the north pole of a compass needle points.
A magnetic field is defined by the force that a charged particle experiences...
7.1K
Diamagnetism01:26

Diamagnetism

2.9K
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....
2.9K
Magnetostatic Boundary Conditions01:28

Magnetostatic Boundary Conditions

1.6K
An electric field suffers a discontinuity at a surface charge. Similarly, a magnetic field is discontinuous at a surface current. The perpendicular component of a magnetic field is continuous across the interface of two magnetic mediums. In contrast, its parallel component, perpendicular to the current, is discontinuous by the amount equal to the product of the vacuum permeability and the surface current. Like the scalar potential in electrostatics, the vector potential is also continuous...
1.6K
Symmetry in Maxwell's Equations01:28

Symmetry in Maxwell's Equations

4.1K
Once the fields have been calculated using Maxwell's four equations, the Lorentz force equation gives the force that the fields exert on a charged particle moving with a certain velocity. The Lorentz force equation combines the force of the electric field and of the magnetic field on the moving charge. Maxwell's equations and the Lorentz force law together encompass all the laws of electricity and magnetism. The symmetry that Maxwell introduced into his mathematical framework may not be...
4.1K
Magnetism01:30

Magnetism

8.3K
Magnets are commonly found in everyday objects, such as toys, hangers, elevators, doorbells, and computer devices. Experimentation on these magnets shows that all magnets have two poles: one is labeled north (N) and the other south (S). Magnetic poles repel if they are alike and attract if unlike. Moreover, both poles of a magnet attract unmagnetized pieces of iron.
An individual magnetic pole cannot be isolated. No matter how small, every piece of a magnet contains a north pole and a south...
8.3K

You might also read

Related Articles

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

Sort by
Same author

A spin-crossover-mediated potential-dependent selective NO reduction reaction on iron-polyphthalocyanine: a DFT study.

Physical chemistry chemical physics : PCCP·2026
Same author

Concentrating and directing energy flow in plasmonic heterostructures for stable and efficient light-driven methane dry reforming.

Nature communications·2026
Same author

Optical Imaging of the Interlayer Sliding in Two-Dimensional 1T'-ReS<sub>2</sub>.

Nano letters·2026
Same author

Efficient Tuning Framework for Resource- Constrained Biomedical Question Answering.

IEEE transactions on computational biology and bioinformatics·2026
Same author

Cu-Co Dual Single Atom and Nitrogen Doped Carbon Nanotubes as Oxygen Reduction Reaction Electrocatalysts.

ACS applied materials & interfaces·2026
Same author

Unraveling the Influence of Surface Termination, Symmetry, and Layer Thickness on the Piezocatalytic Activity of Tetragonal Barium Titanate.

ACS applied materials & interfaces·2025

Related Experiment Video

Updated: Jan 16, 2026

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
08:01

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

7.6K

Symmetry-Breaking Magneto-Optical Effects in Altermagnets.

Jiuyu Sun1, Yongping Du1, Erjun Kan1

  • 1MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing, Nanjing University of Science and Technology, Nanjing 210094, China.

Nano Letters
|October 2, 2025
PubMed
Summary
This summary is machine-generated.

Altermagnets (AMs) show unique optical responses under strain, enabling their distinction from antiferromagnets (AFMs). This discovery offers a new method for characterizing altermagnetism in spintronic materials.

Keywords:
2D materialsaltermagnetsexcitonsmagneto-optical Kerr effectspintronics

More Related Videos

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

3.3K
Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
07:03

Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals

Published on: August 15, 2018

9.2K

Related Experiment Videos

Last Updated: Jan 16, 2026

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
08:01

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

7.6K
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

3.3K
Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
07:03

Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals

Published on: August 15, 2018

9.2K

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Spintronics

Background:

  • Altermagnets (AMs) are a novel class of magnetic materials with potential for spintronics.
  • Experimentally distinguishing AMs from conventional antiferromagnets (AFMs) is challenging, especially for 2D materials.
  • Magneto-optical effects are crucial for probing magnetic properties.

Purpose of the Study:

  • To investigate strain-engineered magneto-optical responses in altermagnets.
  • To reveal the underlying crystal-field mechanism responsible for these responses.
  • To establish a method for differentiating AMs from AFMs.

Main Methods:

  • Symmetry analysis of crystal structures under uniaxial strain.
  • First-principles calculations of magneto-optical responses.
  • Investigation of prototypical systems like V2Se2O monolayer and CrSb bulk.

Main Results:

  • Uniaxial strain selectively breaks symmetries in AMs, activating distinct magneto-optical responses.
  • Strain-induced optical absorption and Kerr rotation signatures are unique to AMs.
  • Calculated signatures are significant for conventional optical measurements.

Conclusions:

  • Strain engineering provides a viable route to identify and characterize altermagnets.
  • This method facilitates the exploration of AMs for advanced spin-based technologies.
  • A rapid, noninvasive characterization methodology for altermagnetism is established.