6 papers
Generalized Shift Vector as the Intrinsic Dipole of Many-Body Correlated Electronic States
Jiaming Hu, Sudipta Kundu, Zhichao Guo +4
Shift vectors play a central role in nonlinear optics and transport phenomena, where they are usually understood as charge-center shifts associated with transitions between quantum…
Ab initio study of carrier mobility in BiOSe
Yubo Yuan, Ziye Zhu, Jiaming Hu +1
BiOSe is an emerging high-performance layered semiconductor with excellent stability. While experimental studies have explored carrier transport across various doping level…
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…
Optical Manifestations of Quantum Geometry in Electron-Phonon Coupling
Jiaming Hu, Wenbin Li, Zhichao Guo +2
Quantum geometry is crucial for understanding intricate condensed matter systems, governing transport phenomena and optical responses. However, traditional studies predominantly co…
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…
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,…