Abstract
We present a theoretical study of the valence-band states in diluted magnetic semiconductor quantum wire structures. As a consequence of confinement in two directions, the hole states in a quantum wire are known to be mixtures of heavy- and light-hole components. Due to a strong p-d exchange interaction in diluted magnetic semiconductors, the relative contribution of these components is strongly affected by an external magnetic field B, a feature that is absent in nonmagnetic quantum wires. This leads, in turn, to a strong magnetic-field dependence of the probabilities of various optical dipole transitions in diluted magnetic semiconductor quantum wires. Numerical calculations performed for the case of ${\mathrm{Cd}}_{1\ensuremath{-}x}{\mathrm{Mn}}_{x}{\mathrm{T}\mathrm{e}/\mathrm{C}\mathrm{d}}_{1\ensuremath{-}x\ensuremath{-}y}{\mathrm{Mn}}_{x}{\mathrm{Mg}}_{y}\mathrm{Te}$ T-shaped quantum wires demonstrate the possibility to efficiently control the polarization characteristics of light emitted from such structrures by means of an external magnetic field B.
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.
