66 citations · 156 across the 9 of their papers we have counts for
8 papers · 1 filter
Direct observation of anisotropic exciton dispersion in the 2D semiconductor CrSBr
Yiwen Song, Peiyi He, Weizhe Zhang +7
We report momentum-resolved measurements of exciton dispersion in multilayer CrSBr using defocus-engineered electron energy-loss spectroscopy, supported by first-principles calcula…
Symmetry-Breaking Magneto-Optical Effects in Altermagnets
Jiuyu Sun, Yongping Du, Erjun Kan
The recently discovered altermagnets (AMs), hosting momentum-dependent spin splitting and vanishing net magnetization, have attracted intensive attention for their promising applic…
Finite-momentum dielectric function and excitonic effects from time-dependent density-functional theory with dielectrically screened hybrid functionals
Didarul Alam, Jiuyu Sun, Carsten A. Ullrich
This paper studies the performance of time-dependent density-functional theory (TDDFT) for calculating the dielectric function of semiconductors and insulators at finite momentum t…
Real-time exciton dynamics with time-dependent density-functional theory
Jiuyu Sun, Cheng-Wei Lee, Alina Kononov +2
Linear-response time-dependent density-functional theory (TDDFT) can describe excitonic features in the optical spectra of insulators and semiconductors, using exchange-correlation…
Optical properties of CsCuX (X=Cl, Br and I): A comparative study between hybrid time-dependent density-functional theory and the Bethe-Salpeter equation
Jiuyu Sun, Carsten A. Ullrich
The cesium copper halides CsCuX (X=Cl, Br and I) are a class of all-inorganic perovskites with interesting and potentially useful optical properties, characterized by disti…
Two-dimensional Penta-Pt2N4: an ideal material for nanoelectronics
Zhao Liu, Haidi Wang, Jiuyu Sun +2
Since the discovery of graphene, two-dimensional (2D) materials have paved a new routine for designing high-performance nanoelectronic devices. To facilitate the device application…
BP_5 Monolayer with Multiferroicity and Negative Poisson's Ratio: A Prediction by Global Optimization Method
Haidi Wang, Xingxing Li, Jiuyu Sun +2
Based on variable components global optimization algorithm, we predict a stable two-dimensional (2D) phase of boron phosphide with 1:5 stoichiometry, i.e. boron pentaphosphide (BP_…
A many-body GW+BSE investigation of electronic and optical properties of C2N
Jiuyu Sun, Ruiqi Zhang, Xingxing Li +1
A newly synthesized layered material C2N was investigated based on many- body perturbation theory using GW plus Bethe-Salpeter equation approach. The electronic band gap was determ…