Optical Properties of the DMS Ellipsoid Quantum Dot with Rashba Spin-Orbit Interaction

Abstract In this work, the optical properties of a dilute semimagnetic semiconductor ellipsoidal quantum dot with Rashba spin-orbit interaction are investigated. Using the adiabatic approximation method, the Hamiltonian of an electron in an ellipsoidal quantum dot was divided into two substates, defined as “slow” and “fast”. The Schrödinger equation was solved by the effective mass approximation method. The change in the absorption coefficient as a function of the energy of the incident photon was studied for various values of parameters, such as the magnetic field, the Rashba parameter, temperature, concentration of Mn atoms and the radius of the ellipsoid. According to the results obtained, these parameters significantly affect the intraband energy levels. Thereby influencing the optical transitions of the quantum system under consideration. It was found that with increasing magnetic field value, the maximum absorption coefficient increases and shifts to the left relative to the incident photon. As the value of the Rashba parameter increases, the maximum absorption coefficient decreases and shifts to the right relative to the incident photon. Increasing the ellipsoid radius decreases the maximum absorption coefficient and shifts it to the left relative to the incident photon. And an increase in the temperature and concentration of the Mn atom shifts the maximum absorption coefficient to the left relative to the incident photon.