Diluted magnetic concentric double quantum rings embedded in a quantum well: effect of magnetic field and ring dimension
Nanostructure Lab, Department of Physics, The Gandhigram Rural Institute (Deemed to be University), 624302, Gandhigram, Dindigul, Tamilnadu, India
Accepted: 28 May 2021
Published online: 21 June 2021
Theoretical investigation on the donor dynamics in CdTe/Cd0.9Mn0.1Te diluted magnetic concentric double quantum ring structure embedded inside a quantum well in the presence of magnetic field has been made using variational approach. The influence of magnetic field on the binding energy of a donor has been studied for various ring and barrier dimensions. Carrier stability and the formation of bound magnetic polaron for both symmetric and asymmetric ring structures have been calculated through <r2> and exchange interaction. Application of magnetic field is found to be an effective tool to control the carrier dynamics in asymmetric quantum rings. The effect of the width of the quantum well on the bound magnetic polaron has been discussed.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2021