Abstract
Magnetic field effects om strong-coupling polarons in a parabolic quantum dot are investigated by the Landau-Pekr variational treatment. The polaron binding energy and the average number of virtual phonons around the electrons as functions of the magnetic field strength and the effective confinement length of the quantum dot are obtained in the Gaussian function approximation. It is shown that in the presence of magnetic fields, the polaron binding energy increases with the enhancement of the magnetic field strength. The magnetic field effects on the average number of virtual phonons around the electron are very small for strong electron-LO-phonon coupling.
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