14 citations · 18 across the 5 of their papers we have counts for
4 papers · 1 filter
Unified First-Principles Theory of Finite-Wave-Vector Photocurrents in Crystals
Bumseop Kim, Sayed Ali Akbar Ghorashi, Yicong Chen +2
Spatially structured light carries independent phase and envelope variations in addition to its polarization and frequency. We develop a first-principles theory of second-order dc…
Spatially dispersive photogalvanic effects as a probe of quantum geometric tensor
Yicong Chen, Bumseop Kim, Senin Ahammed Akkara Paramban +8
Berry curvature and quantum metric of Bloch states govern a wide range of phenomena, yet unified experimental access to both remains limited. Here we show that light spatial-disper…
Simple realization of a fragile topological lattice with quasi flat-bands in a microcavity array
Yuhui Wang, Shupeng Xu, Liang Feng +1
Topological flat bands (TFBs) are increasingly recognized as an important paradigm to study topological effects in the context of strong correlation physics. As a representative ex…
Opto-twistronic Hall effect in a three-dimensional spiral lattice
Zhurun Ji, Yuzhou Zhao, Yicong Chen +7
Studies of moire systems have elucidated the exquisite effect of quantum geometry on the electronic bands and their properties, leading to the discovery of new correlated phases. H…