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cond-mat.mes-hall2025
Microscopic Theory of Light-Induced Coherent Phonons Mediated by Quantum Geometry
Jiaming Hu, Zhichao Guo, Wenbin Li +2
Light-induced coherent phonons provide a powerful platform for ultrafast control of material properties. However, the microscopic theory and quantum geometric nature of this phenom…
cond-mat.mes-hall2025
Gate-tunable hot electron extraction in a two-dimensional semiconductor heterojunction
Chenran Xu, Chen Xu, Jichen Zhou +9
Hot carrier solar cells (HCSCs), harvesting excess energy of the hot carriers generated by above-band-gap photoexcitation, is crucial for pushing the solar cell efficiency beyond t…
cond-mat.mtrl-sci2025
Quantum Geometric Origin of Strain-Tunable Giant Second-Harmonic Generation in BiOX (X=S, Se, Te)
Zhefeng Lou, Zhihao Gong, Ziye Zhu +3
Two-dimensional (2D) materials with giant nonlinear optical (NLO) responses are essential for the development of advanced on-chip NLO devices. Using first-principles calculations,…