Photon-driven magnetization switching in Fe₃GeTe₂ enables programmable, multilevel magnetic memory
Wei-Qing Li, Sheng-Hsiung Hung, Jia-Xin Li, Chung-Chun Lu, Po-Liang Chen, Ching Kuo, Kun-Hung Pan, Horng-Tay Jeng, Chang-Hua Liu · 2026
Read Photon-driven magnetization switching in Fe₃GeTe₂ enables programmable, multilevel magnetic memory by Wei-Qing Li, Sheng-Hsiung Hung, Jia-Xin Li, Chung-Chun Lu, Po-Liang Chen, Ching Kuo, Kun-Hung Pan, Horng-Tay Jeng, Chang-Hua Liu (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-13635152.txt.
Description
Wei-Qing Li and colleagues showed in 2026 that light pulses can switch magnetisation in a layered magnetic material, opening a route to optical memory. Two-dimensional magnets have revived interest in thin magnetic materials, and voltage or strain can already flip their states. Light-based switching is less explored, despite its promise for fast, dense, and low-energy devices.
Measurements of reflected light under magnetic fields showed that pulse energy, brightness, and polarisation all governed the response. Strong pulses lowered the force needed to flip magnetisation, and opposite circular polarisations suppressed or restored the signal in reverse. The team then demonstrated multilevel, reversible writing and erasing, with separate spin states placed at chosen spots.
Catalog record
| CREATOR | Wei-Qing Li, Sheng-Hsiung Hung, Jia-Xin Li, Chung-Chun Lu, Po-Liang Chen, Ching Kuo, Kun-Hung Pan, Horng-Tay Jeng, Chang-Hua Liu |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 70 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |