We calculate electron-phonon relaxation rates in CdSe spherical quantum dots in the presence of the quantizing magnetic field. The calculated scattering rates include the contributions of the confined and surface optical modes as obtained from the dielectric continuum model. The electron states are calculated within the strong-perturbation approximation. The effects of the competing contributions of the magnetic and spatial confinement on the optical-phonon scattering rates are studied. The enhancement of the scattering rates in the strong magnetic fields regime and the possibility of tuning efficient scattering channels are also discussed.

• Received 31 May 2001

DOI:https://doi.org/10.1103/PhysRevB.65.113301