Degree of circular polarization in II-VI diluted magnetic semiconductor quantum dots

作者：Rana Shivani; Sen Pratima; Sen Pranay Kumar

来源：Journal of Physics and Chemistry of Solids, 2012, 73(7): 896-901.

DOI：10.1016/j.jpcs.2012.02.012

• Semiconductors
• Nanostructures
• Magnetic materials
• Electronic structure
• Optical properties

Degree of circular polarization (DCP) in II-VI diluted magnetic semiconductor quantum dots (QDs) has been studied analytically. Energy levels have been calculated using Luttinger-Kohn Hamiltonian and effective mass approximation. Effects due to application of externa magnetic field have been investigated, followed by calculation of transition dipole moment and DCP. Numerical estimates made for Mn-doped CdSe/ZnSe QDs show that DCP in undoped QDs is negligible while transition metal ion doping yields substantial polarization rotation (approximate to -2.20%) even at moderate magnetic fields (approximate to 0.5 T).

• 出版日期2012-7