Programme

P.19 -- Poster, VCTP-49

Date: Wednesday, 31 July 2024

Time: 08:30 - 10:00

Anisotropic exciton in two-dimensional black phosphorus in a uniform magnetic field

Le Do Dang Khoa, Le Hoang Viet, Le Quang Huy, Le Van Hoang

Ho Chi Minh City University of Education

Exciton in monolayer semiconductor materials is of widespread interest due to their important applications in optoelectronics. An algebraic approach to this problem has been developed for excitons in monolayer transition-metal dichalcogenides with critical results. The present work further develops this algebraic approach for excitons in another conducting material, having an anisotropic structure, the monolayer black phosphorus. This problem has a more complex structure. However, we have built an algebraic representation of the Schrödinger equation through the quantum creation and annihilation operators. Then, we constructed a basis set of wave functions and obtained analytical matrix elements concerning this basis set functions. Combined with algebraic calculations, regulated perturbation theory is applied to the problem in the presence of a magnetic field, giving results consistent with other calculations. These results are essential steps, promoting the application of the algebraic method to anisotropic two-dimensional excitons at higher-approximation orders in subsequent works.

Presenter: Lê Đỗ Đăng Khoa