2d semiconductors 1anisotropy 1electron energy-loss spectroscopy 1exciton dispersion 1magnetic phase transition 1
From the 1 of 3 linked papers with an AI index.
3 papers
cond-mat.mes-hall2026
Direct Measurement of Exciton Dispersion in the Long-Wavelength Limit
Peiyi He, Jiade Li, Jiakai Wang +15
Exciton dispersion, which governs the propagation, scattering and radiative decay of electron-hole pairs, is essential to optoelectronics and quantum materials. In two-dimensional…
cond-mat.mtrl-sci2026
Direct observation of anisotropic exciton dispersion in the 2D semiconductor CrSBr
Yiwen Song, Peiyi He, Weizhe Zhang +7
The authors use momentum‑resolved electron energy‑loss spectroscopy and first‑principles calculations to measure exciton dispersion in multilayer CrSBr, revealing a strong in‑plane…
physics.optics2025
Strongly confined Mid-infrared to Terahertz Phonon Polaritons in Ultra-thin SrTiO3
Peiyi He, Jiade Li, Cong Li +7
Phonon polaritons (PhPs) enable subwavelength light control for infrared sensing, imaging, and optoelectronics, but conventional polar materials have narrow Reststrahlen bands, lim…