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Updated: Aug 5, 2026
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Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
Signatures of Altermagnetism in BiFeO_{3}
Sajid Husain1,2, Maya Ramesh3, Qian Song1,4
1University of California, Department of Materials Science and Engineering, Berkeley, California, USA.
Physical Review Letters
|July 31, 2026
Summary
We report anisotropic magnon transport in confined BiFeO₃ layers, controlled by electric fields. This discovery enables manipulation of spin transport and demonstrates a novel altermagnetic state, paving the way for electric-field control of magnetism.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Spintronics
Background:
- Magnons are key for ultrafast spin-based information transfer.
- Controlling magnon transport with electric fields is crucial for next-generation devices.
Purpose of the Study:
- To investigate magnon transport and its anisotropic behavior in confined BiFeO₃/LaFeO₃ heterostructures.
- To explore electric-field control of spin transport and emergent magnetic states.
Main Methods:
- Fabrication of ultrathin BiFeO₃ layers confined by LaFeO₃.
- Experimental investigation of magnon transport properties.
- Analysis of electric-field effects on spin transport.
Main Results:
- Observed efficient magnon transport in confined BiFeO₃, exhibiting anisotropic behavior.
- Demonstrated electric-field control and amplification of spin transport.
- Stabilized an altermagnetic state in ultrathin BiFeO₃ with a nontrivial spin current sign inversion.
Conclusions:
- Confined BiFeO₃ layers act as efficient magnon channels with tunable anisotropic transport.
- The interplay between antiferromagnetism and electric fields allows manipulation of spin transport.
- Coexistence of ferroelectricity and altermagnetism in these heterostructures opens new avenues for electric-field-controlled magnetism.
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