Highly anisotropic Zeeman splittings of wurtzite Cd[sub 1−x]Mn[sub x]Se quantum dots
Date of Issue2007
School of Electrical and Electronic Engineering
State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Beijing
The electronic structure and Zeeman splittings of wurtzite Cd1−xMnxSe quantum spheres are studied using the k· p method and mean-field model. It is interesting to find that the Zeeman splittings of some hole states in quantum spheres are highly anisotropic due to the spin-orbit coupling and wurtzite crystal structure. The anisotropy of the Zeeman splittings of hole ground states in large dots is large, while that in small dot is small because the hole ground states vary with radius. An external electrical field can change the Zeeman splitting significantly, and tune the g factor from nearly 0 to about 100.
Electrical and Electronic Engineering
Applied physics letters
© 2007 American Institute of Physics This paper was published in Applied physics letters and is made available as an electronic reprint (preprint) with permission of American Institute of Physics The paper can be found at the following official DOI: http://dx.doi.org/10.1063/1.2784192. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.