Ferromagnetism in Diluted Magnetic Semiconductor (Ga,Mn)As Quantum Wires and Quantum Wells under the Influence of Photo-Excitation and Spin Wave Scattering

Abstract

We present a theoretical investigation of the influence of photo-excitation and spin wave scattering on magnetization of the (Ga,Mn)As diluted magnetic semiconductor (DMS) quantum wires (QWRs) and quantum wells (QWs). Double time temperature dependent Green's function formalism is used for the description of dispersion and spectral density of the systems. Our analysis indicates that spin wave scattering plays an influential role in magnetism of both systems while application of light is insignificant in quantum wells. In the absence of spin wave scattering and at sufficiently low temperatures, a result corresponding to the specific heat of dominating electronic contributions in metals is obtained in QWs. In QWRs, however, this magnetic property is found to vary with T   so that light matter coupling has a leading effect on lower temperatures, where α is the light matter coupling factor and T is the temperature.

Computational investigation of high Curie temperature in a new N‐type ferromagnetic diluted magnetic semiconductors, especially iron‐doped on GaSb

“…[24][25][26][27][28] This diluted magnetic semiconductor device requires a small amount of energy to process, store, and process data simultaneously; it also saves time, space, and money. [29][30][31][32][33][34] Manganese has a partially field 3D shell, but other transition metals do not. Manganese has the ability to create shallow acceptor levels, which are used for special electrical properties.…”

A theoretical model of high Curie temperature for N-type ferromagnetic diluted semiconductors based on iron-doped indium antimonide

“…This type of technology is required if the DMS Curie temperature (T C ) is higher than the room temperature for the application [9]. As is observed, diluted magnetic semiconductor devices not only fill the gap between the magnet and the semiconductor devices but also use it to store, process, and transmit data simultaneously, saving time, space, and money [12][13][14][15][16][17][18].…”