From the 1 of 4 linked papers with an AI index.
4 papers
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…
Nanoscale Thermal Imaging of Dislocation-Mediated Heat Transport
Ruilin Mao, Bingyao Liu, Jiaxin Liu +7
Dislocations in crystalline materials are widely exploited to tailor the thermal conductivity of semiconductors and thermoelectrics, yet a critical gap persists: direct measurement…
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…
Resolving Phonons in Superconductor Bi2Sr2CaCu2O8+δ at Sub-Unit-Cell Resolution
Xiaowen Zhang, Jiade Li, Xiaoyue Gao +9
The role of phonons in cuprates remains controversial, with their complex lattice structure complicating the investigation. Here, we identify phonon modes originating from charge r…