Effect of magnetic and electric fields on optical properties of semiconductor spherical layer

Abstract

Abstract. Theoretical investigation of the influence of magnetic and electric fields on the energy spectrum and wave functions of electron in semiconductor spherical layer has been performed. The case of co-directed electric and magnetic fields has been considered. The Schrödinger equation has been solved using the method of expansion for the wave function of electron in the spherical layer under external fields by applying the complete set of wave functions of a quasi-particle in a spherical nanostructure without the external fields. It has been shown that electric and magnetic fields take off the spectrum degeneration with respect to the magnetic quantum number. The external fields rebuild the energy spectrum and deform wave functions of electron. Moreover, their influence on the spherically symmetric state is the largest one. Increasing the magnetic field induction entails a monotonous dependence of the electron energy for the states with m  0 and non-monotonous one for the states with m < 0. The ground state of electron is successively formed by the states with m = 0, -1, -2, … with increasing the induction of magnetic field. The enhancement of the electric field mainly diminishes the electron energy. The influence of field on the energy and intensities of the 1p-1s intraband transition has been studied. It has been shown that there exists a certain value of the electric field, at which the energy of quantum transition doesn't depend on the magnetic field induction.

Optical properties of GaAs/Al_{x}Ga_{1-x}As/GaAs quantum dot with off-central impurity driven by electric field

“…That is manifested by the optical properties and can be used in new optoelectronic devices. The effect of electric field on quasi-particles energy spectra in spherical nanostructures with one potential well is investigated in [18,26,27].…”

Optical Absorption and Photoluminescence in the Spherical InP/InSb/InP Core/ shell/ shell Nano Structure

“…This is due to the fact that the increasing application of nano materials requires the development of new materials and structures. The requirements dictate that these materials and structures be capable of performing several tasks and functions within the frame work of the unified nanometric geometry [13][14][15][16][17]. In particularly, spherically symmetrical core/shell/shell structures simultaneously combine and synthesize in itself a number of properties of both quantum dots and quantum films.…”