10 fs Dynamics of Photoinduced Magnetic Transition in Double-Layered Charge Ordering in LuFe_2O_4 Under Interlayer Excitation

摘要

Photoinduced growth of the antiferromagnetic state in the ferrimagnetic phase were demonstrated in double layered Fe oxide LuFe_2O_4 by 12 fs infrared pulse under inter-layer excitation. Inter-layer charge imbalance successively induces the changes of charge/magnetic structures interacting with local Fe-O stretching and inter-layer sliding phonons through the exchange interaction.