Giant magnetic moment increase by ultrafast laser light
Sangeeta Sharma, Deepika Gill, Jyoti Krishna, Eddie Harris-Lee, John Kay Dewhurst, Sam Shallcross · 2026
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Description
Sangeeta Sharma and co-authors show that laser light can grow a magnet's strength, not just shrink it, in 2026 theory work. A fast laser pulse was long known to drain magnetic moment within femtoseconds. The team asked whether the right light could do the reverse in two flat magnets.
Calculations on chromium iodide and chromium sulfur bromide found gains of up to a third of the starting moment. The trick lies in the spin texture of one band, which lets strong light flip spins between bands. Both a simple model and a high-grade simulation agreed on the effect. The mechanism opens a path to writing magnetic states with light alone.
Catalog record
| CREATOR | Sangeeta Sharma, Deepika Gill, Jyoti Krishna, Eddie Harris-Lee, John Kay Dewhurst, Sam Shallcross |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 35 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |