Quasi-two-dimensional electron-hole liquid with two type of holes in SiGe/Si quantum wells

7th International Conferences on Physics and Technology of Nanoheterostructure Microwave Electronics: Mokerov Readings 2016;8th International Conferences on Physics and Technology of Nanoheterostructure Microwave Electronics: Mokerov Readings 2017

Vasilchenko, A.A.^1 ; Kopytov, G.F.^1

Kuban State University, Stavropolskaya 149, Krasnodar

350040, Russia^1

关键词: Density of electrons;    Dinger equation;    Light holes;    Numerical solution;    SiGe/Si;    Two dimensional electrons;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/475/1/012027/pdf
DOI  :  10.1088/1757-899X/475/1/012027

来源: IOP

【 摘 要 】

The density functional theory was used to calculate the energy of a quasi-two-dimensional electron-hole liquid (EHL) in Si/Si1-xGex/Si quantum wells. We have performed a numerical solution of the three one-dimensional nonlinear Schrödinger equations for electrons, heavy and light holes. It is shown that EHL contains heavy and light holes for small x. With an increase in x, a transition to a state with one type of hole occurs, and the density of electron-hole pairs decreases by more than three times. The results of the calculations are in good agreement with the experimental results.