Axion electrodynamics in a topologically trivial antiferromagnet
Abhilash Mishra, Robin Karothiya, Syed Qamar Abbas Shah, Arti Kashyap, Christian Binek · 2026
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Description
Abhilash Mishra and colleagues chase a physics effect in an ordinary magnetic crystal, reporting axion-like behaviour in chromia in 2026. Axion electrodynamics began as high-energy theory, where a field links electricity and magnetism in a simple even-handed way. In solids, the same maths would show as a magnetoelectric response equal in every direction, a pattern never cleanly seen. The team worked with chromia, an antiferromagnet with no exotic topology, using low-frequency alternating measurements backed by computer simulation.
Signals showed the even, single-value response expected from an axion term once rival contributions were suppressed. The response crossed zero at 168 kelvin, a fingerprint tying it to the axion part rather than background effects. The authors present chromia as a workable platform for axion physics in a bench-top material, with paths toward new magnetoelectric devices.
Catalog record
| CREATOR | Abhilash Mishra, Robin Karothiya, Syed Qamar Abbas Shah, Arti Kashyap, Christian Binek |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 56172 |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |