Zeeman effect and magnetic field induced spin-hybridization in semiconductor quantum dots

We present a systematic theoretical study of the effective Zeeman spin- and non-linear-splitting of a single spherical quantum dot based on the 8 x 8 k (.) p Hamiltonian model. The effect of spin-hybridization on conduction band states is pointed out as the main source of the strong dependence of Lande factors and effective masses on external fields. The topology of the electronic orbitals is highly sensitive to the magnetic field tuning and to the spin polarization. The electron, hole and excitonic g-factors, as well as the diamagnetic coefficient are calculated for CdTe semiconductor quantum dots. Different systematic experimental methods are proposed in order to determine the behaviour of the electronic properties under analysis as a function of magnetic field and confinement geometry. Complementary optical transitions, in Faraday and Voigt configurations, can be used in the determination of electron, hole and exciton Lande factors, effective magnetic masses and diamagnetic coefficients.