Abstract
Negative-donor centers in quantum dots with parabolic confinement potential havebeen studied for the case with the presence of a perpendicular magnetic field.Calculations are carried out by using the method of numerical diagonalization of theHamiltonian matrix within the effective-mass approximation. The ground-stateelectron structures and angular momentum transitions are investigated. Thebinding energies of the ground and some bound excited states are obtained as afunction of the applied magnetic field strength. As the magnetic field strengthB is increased, there may appear more bound states. On the basis of the computed energies andwavefunctions, the linear optical absorption coefficients have been examined, for between the1P and 1S states. The results are presented as a function of the incident photon energy for thedifferent values of the confinement strength and the magnetic field strength. It is foundthat the optical properties of the negative-donor centers in quantum dots arestrongly affected by the confinement strength and the magnetic field strength.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
