5 papers
Spin-Chirality-Driven Bulk Photovoltaic Effect in van der Waals Magnet CrSBr
Dezhao Wu, Yong Xu, Meng Ye +1
The bulk photovoltaic effect (BPVE) can be greatly enriched in magnetic materials. Here, we establish vector spin chirality as a tunable knob for generating an unconventional time-…
Exciton-roton mode in moiré fractional Chern insulators
Xiaoyang Shen, Zijian Zhou, Ruiping Guo +4
Moiré fractional Chern insulators (FCIs) are a novel class of quantum matter that realizes fractional quantum Hall (FQH) physics in zero magnetic field and provides a platform for…
Manipulating Charge Distribution in Moiré Superlattices by Light
Ruiping Guo, Haowei Chen, Wenhui Duan +2
In ordinary solids, nonlinear optical responses are typically studied in terms of unit-cell averages due to the angström-scale lattice constants. In contrast, moiré superlattices…
Spin-chirality-driven second-harmonic generation in two-dimensional magnet CrSBr
Dezhao Wu, Yong Xu, Meng Ye +1
The interplay between magnetism and light can create abundant optical phenomena. Here, we demonstrate the emergence of an unconventional magnetization-induced second-harmonic gener…
Magnetorotons in Moiré Fractional Chern Insulators
Xiaoyang Shen, Chonghao Wang, Xiaodong Hu +5
The discovery of fractional Chern insulators (FCIs) unlocks exciting opportunities to explore emergent physical excitations arising from topological and geometric effects in novel…