Cyclotron resonance of a magnetopolaron in a harmonic quantum dot in resonant magnetic fields

Abstract

Cyclotron resonance of a magnetopolaron in a harmonic quantum dot with the resonant magnetic field normal to the plane of the quantum dot is investigated theoretically. It is shown that for a resonant magnetic field, the two cyclotron masses ( m ∗ + and m ∗ −) in a harmonic quantum dot are each split into two cyclotron masses, respectively. The cyclotron mass ( m ∗ +) decreases with decreasing size of the quantum dot, the stronger the magnetic field strength, the larger the cyclotron mass. The lower branch of the cyclotron mass ( m ∗ −) increases linearly with increasing magnetic field strength. The upper branch of the cyclotron mass ( m ∗ −) is larger than the bare band mass and enhances as the magnetic field strength increases.