Abstract
We study cyclotron resonance of magnetopolarons in a harmonic quantum dot. The results show that for weak magnetic field , the cyclotron mass in a harmonic quantum dot is split into two cyclotron masses and . One is larger than the bare band mass for large quantum dots but is lower than the bare band mass for small quantum dots, and with decreasing the effective confinement length of the quantum dot, the negative mass renormalization for the small quantum dots is important. The other is greater than the bare band mass and might be a measurable effect fbr the small quantum dots.
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