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

Raman Spectroscopy: Overview01:20

Raman Spectroscopy: Overview

2.6K
The underlying principle of Raman spectroscopy is based on the interaction between light and matter, specifically molecules' inelastic scattering of photons. When a monochromatic beam of light, typically from a laser source, interacts with a sample, most scattered light has the same frequency as the incident light. This is known as Rayleigh scattering.
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
2.6K
Magnetic Moment of an Electron01:23

Magnetic Moment of an Electron

3.3K
Electrons revolving around a nucleus are analogous to a circular current carrying loop. This current produces a magnetic dipole moment proportional to the electron's orbital angular momentum. Since the orbital angular momentum is quantized in terms of the reduced Planck's constant, the dipole moment is quantized in the Bohr Magneton. The value of the Bohr magneton is 9.27 x 10-24 Am2. Electrons also have an intrinsic spin angular momentum, and the associated spin magnetic moment is...
3.3K
The de Broglie Wavelength02:32

The de Broglie Wavelength

34.7K
In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
34.7K
Diamagnetism01:26

Diamagnetism

3.4K
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....
3.4K
Paramagnetism01:30

Paramagnetism

3.2K
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...
3.2K
Raman Spectroscopy Instrumentation: Overview01:26

Raman Spectroscopy Instrumentation: Overview

1.8K
A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
1.8K

You might also read

Related Articles

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

Sort by
Same author

The Beclin1‑Targeting stapled peptide suppresses colorectal cancer progression by disrupting EGFR/β-catenin axis.

Journal of translational medicine·2026
Same author

Correction: The downregulation of ubiquitin-specific peptidase 2 indicates a poor prognosis and promotes the progression of gastric cancer through focal adhesion and ECM pathway signaling.

Scientific reports·2026
Same author

Evidence for Step-Edge-Assisted Large Hole Borophene on Ni(111).

ACS applied materials & interfaces·2026
Same author

Comprehensive three-dimensional morphological changes of mandibular incisors and surrounding alveolar bone in patients with skeletal Class III malocclusion following surgery-first or conventional bimaxillary orthognathic surgery.

Journal of cranio-maxillo-facial surgery : official publication of the European Association for Cranio-Maxillo-Facial Surgery·2026
Same author

Ising Supercriticality and Universal Magnetocalorics in Spiral Antiferromagnet Nd_{3}BWO_{9}.

Physical review letters·2026
Same author

METTL3-Mediated m<sup>6</sup>A Modification Stabilizes COL1A1 mRNA to Promote Extracellular Matrix Accumulation in Keloids.

Experimental cell research·2026

Related Experiment Video

Updated: Apr 5, 2026

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

11.5K

Direct Raman Observation of the Quantum Metric in a Quantum Magnet.

Chao-Fan Wang1, Han Ge1, Jun-Yang Chen1

  • 1Southern University of Science and Technology (SUSTech), State Key Laboratory of Quantum Functional Materials, Department of Physics, and Guangdong Basic Research Center of Excellence for Quantum Science, Shenzhen 518055, China.

Physical Review Letters
|April 3, 2026
PubMed
Summary

Raman spectroscopy now probes quantum geometry by measuring both Berry curvature and quantum metric in chiral magnets. This unified approach reveals a common origin for field-dependent phonon shifts.

More Related Videos

Gradient Echo Quantum Memory in Warm Atomic Vapor
10:00

Gradient Echo Quantum Memory in Warm Atomic Vapor

Published on: November 11, 2013

13.3K
Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
12:57

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Published on: October 13, 2017

9.7K

Related Experiment Videos

Last Updated: Apr 5, 2026

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

11.5K
Gradient Echo Quantum Memory in Warm Atomic Vapor
10:00

Gradient Echo Quantum Memory in Warm Atomic Vapor

Published on: November 11, 2013

13.3K
Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
12:57

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Published on: October 13, 2017

9.7K

Area of Science:

  • Condensed Matter Physics
  • Quantum Materials
  • Spectroscopy

Background:

  • The quantum geometric tensor combines Berry curvature and quantum metric, crucial for understanding electron behavior.
  • Previous Raman spectroscopy studies primarily accessed only the Berry curvature component, limiting insights into quantum geometry.
  • Chiral phonons in quantum magnets are key systems for exploring these geometric properties.

Purpose of the Study:

  • To demonstrate Raman spectroscopy's capability to probe both the Berry curvature and the quantum metric.
  • To investigate the relationship between field-odd chiral splitting and field-even center shift in chiral phonons.
  • To establish a unified experimental approach for decomposing quantum geometry.

Main Methods:

  • Circularly polarized Raman spectroscopy was performed on the quantum magnet K_{2}Co(SeO_{3})_{2}.
  • Measurements were conducted across varying temperatures and magnetic fields to observe phonon behavior.
  • Analysis focused on the field-odd chiral splitting (Δω) and field-even center shift (δω_{c}).

Main Results:

  • Field-odd chiral splitting (Δω) and field-even center shift (δω_{c}) were found to collapse onto a single curve.
  • This unified behavior indicates a common microscopic origin for both observables.
  • The field-even component (δω_{c}) was identified as reflecting field-induced changes in the quantum metric (diagonal Born-Oppenheimer correction).

Conclusions:

  • Raman spectroscopy can directly probe the quantum metric, not just the Berry curvature.
  • A unified measurement provides an operational decomposition of quantum geometry in chiral systems.
  • An empirical relation, δω_{c}=γ(Δω)^{2}, successfully describes the observed phenomena across E_{g} modes.