6 papers
Enhancing Cutoff Energy of Solid High-Harmonic Generation from Bonding Length Perspective
Qing-Guo Fan, Kang Lai, Wen-hao Liu +3
High-harmonic generation (HHG) from solid state offers promising potential for attosecond optics with enhanced efficiency and compact configurations. However, Current implementatio…
Occupation-Driven emission asynchronous as a Fundamental Constraint on Solid-State Attosecond Pulses
Qing-Guo Fan, Kang Lai, Wen-hao Liu +3
A newly analytic occupation-resolved theory capturing the temporal structure of attosecond pulses (APs) is derived. We validate it with real-time time-dependent density functional…
Origin of Suppressed Ferroelectricity in k-GaO: Interplay Between Polarization and Lattice Domain Walls
Yonghao Zhu, Zhi Wang, Junwei Luo +1
The large discrepancy between experimental and theoretical remanent polarization and coercive field limits the applications of wide-band-gap ferroelectric materials. Here, using a…
Revealing Material-Dependent Bicircular High-Order Harmonic Generation in 2D Semiconductors via Real-Space Trajectories
Qing-Guo Fan, Kang Lai, Wen-hao Liu +3
Solid-state high-order harmonic generation (HHG) presents unique features different from gases.Whereas the gaseous harmonics driven by counter-rotating bicircular (CRB) pulse unive…
Ultrafast dynamics of atomic correlated disordering in photoinduced VO
Wen-Hao Liu, Feng-Wu Guo, Lin-Wang Wang +1
Recent experiments suggest that atomic disordering dynamics are more universal than conventional coherent processes in photoinduced phase transitions (PIPTs), yet its mechanism rem…
The photoinduced hidden metallic phase of monoclinic VO2 driven by local nucleation via a self-amplification process
Feng-Wu Guo, Wen-Hao Liu, Zhi Wang +3
The insulator-to-metal transition (IMT) in vanadium dioxide (VO2) has garnered extensive attention for its potential applications in ultrafast switches, neuronal network architectu…