Programme

P.26 -- Poster, VCTP-49

Date: Wednesday, 31 July 2024

Time: 08:30 - 10:00

Excitonic systems in two-layer 2D parabolic quantum dots

Nguyen Hong Quang (1) and Nguyen Que Huong (2)

(1) Institute of Physics, VAST, 10 Dao Tan, Ba Dinh, 118000 Hanoi, Vietnam (2) Marshall University, One John Marshall Drive, Huntington, WV 2570, USA

In this work we consider excitonic systems such as excitons, trions and quadrons in two-layer 2D parabolic quantum dots, where electrons and holes confined in separate layers of quantum dots using an unrestricted Hartree-Fock method. The matrix elements of the Coulomb interactions between electrons and holes are derived analytically including the distance between two layers as a system parameter. The binding energies of the excitonic systems, calculated as functions of the system parameters, such as the distance between two layers, mass and confinement ratios between electrons and holes, show us the role of each kind of parameters in their overall competition picture.

Presenter: Nguyen Hong Quang