English
Bright-to-dark exciton transfer is central to exciton condensation, yet it depends on coupled electron–hole, exciton–phonon, charge-transfer, and energy-transfer processes. By combining LR-TDDFT with nonadiabatic molecular dynamics, we study ultrafast moiré-exciton dynamics across time and space. The work identifies the role of many-body interactions and predicts a route toward one-dimensional Tonks–Girardeau exciton condensation in twisted phosphorene.
Relevant publication: Science Advances 9, eadi5404 (2023).
中文
亮激子向暗激子的超快转移是实现激子凝聚的关键过程。课题组结合 LR-TDDFT 与非绝热分子动力学，从时间和空间等维度研究明暗激子转移，并揭示多体相互作用在超快动力学中的作用；同时预言转角黑磷体系中实现一维 Tonks–Girardeau 激子玻色凝聚的可能性。