| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1545078 | Physica E: Low-dimensional Systems and Nanostructures | 2013 | 7 Pages |
Binding energy of a confined exciton is investigated in a Cd1−xoutMnxoutTe/Cd1−xinMnxinTe/Cd1−xoutMnxoutTeCd1−xoutMnxoutTe/Cd1−xinMnxinTe/Cd1−xoutMnxoutTe diluted magnetic quantum well in the influence of electric field. Calculations are performed for various Mn incorporation in Cd1−xMnxTe material within a single band effective mass approximation using variational method. Spin polaronic shifts are estimated using mean field theory for different Mn concentration and the well sizes. A theoretical study of diluted magnetic semiconductors treating local sp–d exchange interaction J between the itinerant carriers and the Mn electrons is treated within a realistic band structure. The optical absorption and the refractive index changes as a function of normalized photon energy in the presence of electric field strength and the Mn ion content are analysed. Our results show that the occurred red shift of the absorption resonant peak due to the electric field gives the information about the variation of two energy levels in the quantum well. The optical absorption coefficients and the refractive index changes strongly depend on the incident optical intensity, the electric field strength and Mn content.
Graphical abstractThis figure depicts the variation of total absorption coefficient of an exciton in a Cd1−xoutMnxoutTe/Cd1−xinMnxinTe/Cd1−xoutMnxoutTeCd1−xoutMnxoutTe/Cd1−xinMnxinTe/Cd1−xoutMnxoutTe quantum well width of 100 Å as a function of photon energy for different values of electric field strength for a constant Mn concentration. It is observed that the absorption coefficient peak moves to the lower photon energy as the electric field strength is increased. As the electric field increases, the total absorption coefficient shifts toward lower energies and the magnitude also decreases. Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Binding energy of an exciton is investigated in a DMS quantum well in the influence of electric field. ► Calculations are performed for various Mn incorporation in Cd1−xMnxTe material. ► Spin polaronic shifts are estimated using mean field theory for different Mn concentration and the well sizes. ► Linear optical properties are studied in the presence of electric field strength and the Mn ion content. ► The red shift of the absorption resonant peak is obtained with the application of electric field.
