TITLE:
Temperature and Magnetic Field Effect on the Thermodynamic Properties of 2DEG
AUTHORS:
Sonia Bouzgarrou, Haya Abdullah Hazza Almutairi
KEYWORDS:
Two-Dimensional Electron Gas, Density of State, Chemical Potential, Specific Heat Capacity, Magnetization, De Haas-Van Alphen Effect
JOURNAL NAME:
Open Access Library Journal,
Vol.10 No.3,
March
31,
2023
ABSTRACT: A numerical calculation of the temperature and magnetic field dependence of the specific heat capacity, the magnetization, and the chemical potential is carried out. Of particular interest are the properties of the energy of a magnetic field in a two-dimensional electron gas exposed to a magnetic field. Thus, in this paper, we illustrate the effect of temperature on the oscillation dHvA of specific heat capacity and magnetization. As well a mathematical model has been developed for calculating the temperature dependence of the oscillations of the chemical potential and the density of states under the influence of a magnetic field. Using the proposed model, the results were explained at different broadening factors Γ. The calculated results show that specific heat capacity and magnetization increase as the magnetic field increases. Additionally, these increases carry out that the magnetic field is large enough to neglect the mixing of Landau levels caused by the sharp peak of Landeau levels. Moreover, the 2D dHvA effect is characterized by a sawtooth strap at a very low temperature. These findings revealed that all advantages of GaAs allowed them to use in the manufacture of devices such as microwaves, laser diodes, and solar cells.