2D-limit magnons
Preserves antiferromagnetic order in the few-layer 2D limit, with magnetic-field-tunable magnon frequencies up to tens of gigahertz and real-time optical tracking of magnetic states.
Bartram, F. Michael · Li, Meng · Liu, Liangyang · Xu, Zhiming · Wang, Yongchao · Che, Mengqian · Li, Hao · Xu, Yong · Zhang, Jinsong · Yang, Shuo · Yang, Luyi
Science Bulletin 2023
Magnon frequencies reach tens of gigahertz, strongly dependent on magnetic field
Laser-induced magnetization processes accurately track magnetic states under different fields
Few-layer samples exhibit odd-even layer number effects
Time-resolved reflectivity also observes magnetization and magnon dynamics