Ms. Bingyue Li, Dr. Hui Li, Prof. Chao Wu, Dr. LuLu Fu, Prof. Danil W. Boukhvalov, Prof. Mark G. Humphrey, Prof. Chi Zhang, Prof. Zhipeng Huang
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Titelbild: Unlocking Giant Third-Order Optical Nonlinearity in (MA)2CuX4 through Introducing Jahn-Teller Distortion (Angew. Chem. 38/2024)
Incorporating Jahn–Teller distortion into a Mott–Hubbard system emerges as an effective strategy for developing high-performance nonlinear optical materials. In their Research Article (e202406941), Chi Zhang, Zhipeng Huang employ lattice distortion to provide two distinct transition pathways with varying probabilities, while the Mott–Hubbard configuration ensures the transition sequence. This synergistic design unveils the excited-state absorption in (MA)2CuX4, enabling these materials to simultaneously exhibit a large nonlinear absorption coefficient and substantial modulation depth.