Tuesday, October 7, 2025
Science
No Result
View All Result
  • Login
  • HOME
  • SCIENCE NEWS
  • CONTACT US
  • HOME
  • SCIENCE NEWS
  • CONTACT US
No Result
View All Result
Scienmag
No Result
View All Result
Home Science News Chemistry

Magnetic excitations can be held together by repulsive interactions

June 27, 2024
in Chemistry
Reading Time: 3 mins read
0
Magnetic excitations can be held together by repulsive interactions
66
SHARES
596
VIEWS
Share on FacebookShare on Twitter
ADVERTISEMENT

A group of physicists specialized in solid-state physics from the University of Cologne and international collaborators have examined crystals made from the material BaCO2V2O8 in the Cologne laboratory. They discovered that the magnetic elementary excitations in the crystal are held together not only by attraction, but also by repulsive interactions. However, this results in a lower stability, making the observation of such repulsively bound states all the more surprising. The results of the study ‘Experimental Observation of Repulsively Bound Magnons’ were published in Nature. 
The working group of Professor Dr Thomas Lorenz from the University of Cologne’s Institute of Physics II succeeded in producing artificial crystals made from BaCo2V2O8, which contain screw chains of magnetic cobalt atoms.
Together with researchers from Augsburg, Bonn, Dortmund, Dresden, Geneva and Prince George, the BaCo2V2O8 crystals were irradiated with electromagnetic terahertz waves in order to study the collective magnetic excitations in the crystal structure in high magnetic fields. In addition to the usual elementary magnetic low-energy excitations, the so-called magnons, the researchers also discovered two- and three-magnon bound states. 
The peculiarity of these multi-magnon bound states is that they are held together not by attraction, but by repulsive interactions. “The discovery of these states is the result of the very successful collaboration of experimental and theoretical working groups within the framework of our Collaborative Research Center 1238 ‘Control and Dynamics of Quantum Materials’, based in Cologne,” said Professor Lorenz.
Since 2016, the Collaborative Research Center (CRC) 1238 ‘Control and Dynamics of Quantum Materials’ has united a team of experts from experimental and theoretical physics as well as crystallography in Cologne, complemented by groups from the University of Bonn and Forschungszentrum Jülich. The aim is to discover, understand and control new collective phenomena and new functionalities in quantum materials. 
 

A group of physicists specialized in solid-state physics from the University of Cologne and international collaborators have examined crystals made from the material BaCO2V2O8 in the Cologne laboratory. They discovered that the magnetic elementary excitations in the crystal are held together not only by attraction, but also by repulsive interactions. However, this results in a lower stability, making the observation of such repulsively bound states all the more surprising. The results of the study ‘Experimental Observation of Repulsively Bound Magnons’ were published in Nature. 
The working group of Professor Dr Thomas Lorenz from the University of Cologne’s Institute of Physics II succeeded in producing artificial crystals made from BaCo2V2O8, which contain screw chains of magnetic cobalt atoms.
Together with researchers from Augsburg, Bonn, Dortmund, Dresden, Geneva and Prince George, the BaCo2V2O8 crystals were irradiated with electromagnetic terahertz waves in order to study the collective magnetic excitations in the crystal structure in high magnetic fields. In addition to the usual elementary magnetic low-energy excitations, the so-called magnons, the researchers also discovered two- and three-magnon bound states. 
The peculiarity of these multi-magnon bound states is that they are held together not by attraction, but by repulsive interactions. “The discovery of these states is the result of the very successful collaboration of experimental and theoretical working groups within the framework of our Collaborative Research Center 1238 ‘Control and Dynamics of Quantum Materials’, based in Cologne,” said Professor Lorenz.
Since 2016, the Collaborative Research Center (CRC) 1238 ‘Control and Dynamics of Quantum Materials’ has united a team of experts from experimental and theoretical physics as well as crystallography in Cologne, complemented by groups from the University of Bonn and Forschungszentrum Jülich. The aim is to discover, understand and control new collective phenomena and new functionalities in quantum materials. 
 



Journal

Nature

DOI

10.1038/s41586-024-07599-3

Method of Research

Experimental study

Subject of Research

Not applicable

Article Title

Experimental observation of repulsively bound magnons

Article Publication Date

26-Jun-2024

Share26Tweet17
Previous Post

DeepEvo: An “intelligent” strategy for engineering customized proteins

Next Post

First of its kind study shines light on LGBTQ+ farmer mental health

Related Posts

blank
Chemistry

Bright Red-NIR Glow from Carbodicarbene Borenium Ions

October 6, 2025
blank
Chemistry

Transforming Biogas Waste into an Effective Solution for Ammonium Pollution Cleanup

October 6, 2025
blank
Chemistry

Scientists Incorporate Waveguide Physics into Metasurfaces to Unlock Advanced Light Manipulation

October 6, 2025
blank
Chemistry

Scientists Develop “Knob” to Control Topological Spin Textures in Materials

October 6, 2025
blank
Chemistry

Scientists develop red fluorescent dyes to enhance clarity in biomedical imaging

October 6, 2025
blank
Chemistry

Breakthrough: Ultrafast Squeezed Light Enables First Real-Time Measurement of Quantum Uncertainty

October 6, 2025
Next Post
LGBTQ+ farmer mental health

First of its kind study shines light on LGBTQ+ farmer mental health

  • Mothers who receive childcare support from maternal grandparents show more parental warmth, finds NTU Singapore study

    Mothers who receive childcare support from maternal grandparents show more parental warmth, finds NTU Singapore study

    27563 shares
    Share 11022 Tweet 6889
  • University of Seville Breaks 120-Year-Old Mystery, Revises a Key Einstein Concept

    971 shares
    Share 388 Tweet 243
  • Bee body mass, pathogens and local climate influence heat tolerance

    646 shares
    Share 258 Tweet 162
  • Researchers record first-ever images and data of a shark experiencing a boat strike

    514 shares
    Share 206 Tweet 129
  • Groundbreaking Clinical Trial Reveals Lubiprostone Enhances Kidney Function

    479 shares
    Share 192 Tweet 120
Science

Embark on a thrilling journey of discovery with Scienmag.com—your ultimate source for cutting-edge breakthroughs. Immerse yourself in a world where curiosity knows no limits and tomorrow’s possibilities become today’s reality!

RECENT NEWS

  • Assessing PAH Risks in Airborne Road Particles
  • Measuring Brake Wear Particles in Real-World Driving
  • Study Reveals Solar Energy as the Most Affordable Power Source Globally
  • Bipolar Disorder, Lithium Impact Dentate Gyrus Pattern Separation

Categories

  • Agriculture
  • Anthropology
  • Archaeology
  • Athmospheric
  • Biology
  • Blog
  • Bussines
  • Cancer
  • Chemistry
  • Climate
  • Earth Science
  • Marine
  • Mathematics
  • Medicine
  • Pediatry
  • Policy
  • Psychology & Psychiatry
  • Science Education
  • Social Science
  • Space
  • Technology and Engineering

Subscribe to Blog via Email

Enter your email address to subscribe to this blog and receive notifications of new posts by email.

Join 5,186 other subscribers

© 2025 Scienmag - Science Magazine

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In
No Result
View All Result
  • HOME
  • SCIENCE NEWS
  • CONTACT US

© 2025 Scienmag - Science Magazine

Discover more from Science

Subscribe now to keep reading and get access to the full archive.

Continue reading