Spin Splitting Coupled Visible‐Light Driven Injection Photocurrent in Bilayer Altermagnets
Huanhuan Yang, Yee Sin Ang, Sheng Meng, Xiao Jiang · 2026
Read Spin Splitting Coupled Visible‐Light Driven Injection Photocurrent in Bilayer Altermagnets by Huanhuan Yang, Yee Sin Ang, Sheng Meng, Xiao Jiang (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/PMC13616239.txt.
Description
Huanhuan Yang, Yee Sin Ang, Sheng Meng, and Xiao Jiang study double-layer altermagnets. These form a new class of magnetic materials with no overall magnetisation. In double layers, they can turn visible light into electric current in a spin-aware way. Single layers hide their spin splitting, the separation of electron states by spin, behind symmetry rules. Stacking two layers with coupling between them lifts those rules and switches on a current type that was forbidden before.
Using a simplified model of electron orbits, the team showed two current types moving in opposite directions as the layer coupling grows, each ruled by a distinct mechanism. Detailed calculations on a real candidate material, a manganese phosphorus telluride bilayer, backed the predictions. Such light-driven, spin-sorted currents could serve future low-power devices that read information from spin rather than charge alone.
Catalog record
| CREATOR | Huanhuan Yang, Yee Sin Ang, Sheng Meng, Xiao Jiang |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 20 KB |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |