433 citations · 3.6k across the 58 of their papers we have counts for
59 papers
Exciton vortices in two-dimensional hybrid perovskite monolayers
Yingda Chen, Dong Zhang, Kai Chang
We study theoretically the exciton Bose-Einstein condensation and exciton vortices in a two-dimensional (2D) perovskite (PEA)2PbI4 monolayer. Combining the first-principles calcula…
Geometric photon-drag effect and nonlinear shift current in centrosymmetric crystals
Li-kun Shi, Dong Zhang, Kai Chang +1
The nonlinear shift current, also known as the bulk photovoltaic current generated by linearly polarized light, has long been known to be absent in crystals with inversion symmetry…
Spin-Triplet Excitonic Insulator: The Case of Graphone
Zeyu Jiang, Wenkai Lou, Yu Liu +5
While various excitonic insulators have been studied in the literature, due to the perceived too-small spin splitting, spin-triplet excitonic insulator is rare. In two-dimensional…
From atomic layer to the bulk: low-temperature atomistic structure, ferroelectric and electronic properties of SnTe films
Thaneshwor P. Kaloni, Kai Chang, Brandon J. Miller +5
SnTe hosts ferroelectricity that competes with its weak non-trivial band topology: in the high-symmetry rocksalt structure--in which its intrinsic electric dipole is quenched--this…
Even-odd dependent optical transitions of zigzag monolayer black phosphorus nanoribbons
Pu Liu, Xianzhe Zhu, Xiaoying Zhou +4
We analytically study the electronic structures and optical properties of zigzag-edged black phosphorene nanoribbons (ZPNRs) utilizing the tight-binding (TB) Hamiltonian and Kubo f…
Resistive signature of excitonic coupling in an electron-hole double layer with a middle barrier
Xingjun Wu, Wenkai Lou, Kai Chang +2
We study the interlayer scattering mediated by long-range Coulomb interaction between electrons (density n) and holes (p) in a double-layer system. The gated device is made of InAs…