Valleytronics: Fundamental Challenges and Materials Beyond Transition Metal Chalcogenides (Small 28/2025)

Valleytronics Valleytronics store information using electrons at different momentum spaces in the band structures, as illustrated by the red and blue pockets. The electronic states are protected from thermal scattering by having different spins in each pocket. The valley information can be written into and read from new materials like inorganic perovskite derivatives Cs3Bi2I9 by circularly polarized light. More in article number 2402139, Jia Liang, Hanyu Zhu, and co-workers.