Magneto-Optics in parabolic three-dimensional quantum dots in magnetic fields of arbitrary direction

TL;DR

This paper extends Kohn's theorem to 3D parabolic quantum dots in any magnetic field orientation and uses TDLSDA to accurately predict magneto-optical resonance frequencies and spin excitations.

Contribution

It generalizes Kohn's theorem for 3D quantum dots in arbitrary magnetic fields and applies TDLSDA for precise resonance and spin excitation predictions.

Findings

Resonance frequencies match TDLSDA predictions

Kohn's theorem is extended to arbitrary magnetic field directions

Spin density excitations are successfully predicted

Abstract

We generalize the Kohn's theorem to the case of parabolic three-dimensional quantum dots in magnetic fields of arbitrary direction. We show numerically that the exact resonance frequencies in the magneto-optical absorption of these dots are reproduced by the adiabatic time-dependent local spin density approximation theory (TDLSDA). We use TDLSDA to predict spin density excitations in the dots.