Report
Physics of excitons in layered BiI$_{3}$. Effects of dimensionality and crystal anisotropy
| العنوان: | Physics of excitons in layered BiI$_{3}$. Effects of dimensionality and crystal anisotropy |
|---|---|
| المؤلفون: | Cervantes-Villanueva, Jorge, Paleari, Fulvio, García-Cristóbal, Alberto, Sangalli, Davide, Molina-Sánchez, Alejandro |
| سنة النشر: | 2023 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Materials Science |
| الوصف: | We carry out a detailed theoretical study of the electronic and optical properties of bulk and monolayer bismuth triiodide (BiI$_{3}$), a layered metal halide, using the ab initio GW+BSE scheme with a full spinorial formulation. We discuss in detail the effects due to the change of dimensionality and the role of spin-orbit coupling. Moreover, we compute the exciton dispersion by solving the BSE at finite momentum, also analysing transverse (TE) and longitudinal (LE) excitons, and the L-T splitting at $\bf{q}\approx\Gamma$. The results provide a reference for future experimental measurements. In addition, the interplay between spin-orbit coupling and large binding energy, together with the role of quantum confinement, confirm that BiI$_{3}$ is an interesting material for opto-electronic applications and show that it is a good candidate for the study of exciton dynamics. Comment: 12 pages, 8 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2310.16024 |
| رقم الانضمام: | edsarx.2310.16024 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |