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

Atomic Nuclei: Nuclear Relaxation Processes01:23

Atomic Nuclei: Nuclear Relaxation Processes

732
In the absence of an external magnetic field, nuclear spin states are degenerate and randomly oriented. When a magnetic field is applied, the spins begin to precess and orient themselves along (lower energy) or against (higher energy) the direction of the field. At equilibrium, a slight excess population of spins exists in the lower energy state. Because the direction of the magnetic field is fixed as the z-axis,  the precessing magnetic moments are randomly oriented around the z-axis.
732
Colors and Magnetism03:02

Colors and Magnetism

12.4K
Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
12.4K
Atomic Nuclei: Nuclear Magnetic Moment00:59

Atomic Nuclei: Nuclear Magnetic Moment

1.9K
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...
1.9K
Diamagnetism01:26

Diamagnetism

2.5K
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....
2.5K
Atomic Nuclei: Nuclear Spin State Overview01:03

Atomic Nuclei: Nuclear Spin State Overview

1.2K
NMR-active nuclei have energy levels called 'spin states' that are associated with the orientations of their nuclear magnetic moments. In the absence of a magnetic field, the nuclear magnetic moments are randomly oriented, and the spin states are degenerate. When an external magnetic field is applied, the spin states have only 2 + 1 orientations available to them. A proton with = ½ has two available orientations. Similarly, for a quadrupolar nucleus with a nuclear spin value of...
1.2K
Motional Emf01:22

Motional Emf

3.3K
Magnetic flux depends on three factors: the strength of the magnetic field, the area through which the field lines pass, and the field's orientation with respect to the surface area. If any of these quantities vary, a corresponding variation in magnetic flux occurs. If the area through which the magnetic field lines are passing changes, then the magnetic flux also changes. This change in the area can be of two types: the flux through the rectangular loop increases as it moves into the...
3.3K

You might also read

Related Articles

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

Sort by
Same author

Strain effects on the fluctuation properties in noncollinear antiferromagnets: A first-principles and macrospin-based study.

Physical review applied·2026
Same author

Electric field-induced Kerr rotation on metallic surfaces.

Physical review. B·2026
Same author

Giant Spin-flop magnetoresistance in a collinear antiferromagnetic tunnel junction.

Nature communications·2025
Same author

Stacking-Selective Epitaxy of Rare-Earth Diantimonides.

Nano letters·2025
Same author

Current-induced circular dichroism on metallic surfaces: A first-principles study.

Physical review. B·2025
Same author

Monoclinic LaSb<sub>2</sub> Superconducting Thin Films.

Nano letters·2024

Related Experiment Video

Updated: Sep 20, 2025

Ultrasound Velocity Measurement in a Liquid Metal Electrode
08:41

Ultrasound Velocity Measurement in a Liquid Metal Electrode

Published on: August 5, 2015

11.8K

Elastodynamically Induced Spin and Charge Pumping in Bulk Heavy Metals.

Farzad Mahfouzi1, Nicholas Kioussis1

  • 1Department of Physics and Astronomy, California State University Northridge, Northridge, California 91330-8268, USA.

Physical Review Letters
|June 10, 2022
PubMed
Summary

Acoustic phonons can generate charge and spin currents, similar to the spin-Hall effect. This study reveals the origins and characteristics of these currents in platinum, finding they depend on Berry curvature and spin-orbit coupling.

More Related Videos

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
06:53

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

Published on: June 9, 2023

2.1K
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

8.2K

Related Experiment Videos

Last Updated: Sep 20, 2025

Ultrasound Velocity Measurement in a Liquid Metal Electrode
08:41

Ultrasound Velocity Measurement in a Liquid Metal Electrode

Published on: August 5, 2015

11.8K
Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
06:53

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

Published on: June 9, 2023

2.1K
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

8.2K

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Quantum Mechanics

Background:

  • The spin-Hall effect (SHE) describes the generation of a transverse spin current due to spin-orbit interaction.
  • Acoustic phonons, lattice vibrations, are increasingly recognized for their role in electronic transport phenomena.
  • Understanding phonon-induced currents is crucial for novel electronic and spintronic device applications.

Purpose of the Study:

  • To investigate the ab initio electronic structure for acoustic phonon-induced charge and spin currents.
  • To analyze the mechanisms behind longitudinal charge pumping and transverse spin pumping in bulk platinum.
  • To determine the relativistic and non-relativistic contributions to these induced currents.

Main Methods:

  • Utilized ab initio electronic structure calculations.
  • Employed the Floquet approach to model elastodynamically induced currents.
  • Analyzed the dependence of currents on electronic relaxation time, spin-orbit coupling, and elastic wave amplitude.

Main Results:

  • Demonstrated that acoustic phonons can induce both charge and spin currents.
  • Identified Berry curvature as the origin of longitudinal charge pumping.
  • Showed transverse spin current is a relativistic effect, dependent on spin-orbit coupling and electronic relaxation time, diverging in the clean limit.
  • Both currents exhibit a parabolic dependence on the elastic wave amplitude.

Conclusions:

  • Acoustic phonons can act as a source of charge and spin currents analogous to the spin-Hall effect.
  • The study elucidates the distinct relativistic and non-relativistic origins of charge and spin currents.
  • Findings highlight the potential of phonon engineering for spintronics and charge transport.