High-Temperature Excitonic Condensation in 2D Lattice.

ABSTRACT: Exploration of high-temperature bosonic condensation is of significant importance for the fundamental many-body physics and applications in nanodevices, which, however, remains a huge challenge. Here, in combination of many-body perturbation theory and first-principles calculations, a new-type spatially indirect exciton can be optically generated in two-dimensional (2D) Bi₂S₂Te because of its unique structure feature. In particular, the spin-singlet spatially indirect excitons in Bi₂S₂Te monolayer are dipole/parity allowed and reveal befitting characteristics for excitonic condensation, such as small effective mass and satisfied dilute limitation. Based on the layered Bi₂S₂Te, the possibility of the high-temperature excitoni

SUBMITTER: Xu Y 

PROVIDER: S-EPMC11538676 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature