Energy dependence of the electron‐hole in‐plane anisotropy in InAs/GaAs quantum dots

Abstract

Due to a regrettable technical error some Greek and special letters in the paper were not reproduced. Please, find here the fully corrected article.In pump-probe experiments, we measured the anisotropic exchange energy splitting of the low-lying electron-hole pair states in an ensemble of as-grown InAs/GaAs self-assembled quantum dots. This splitting shows a monotonic decrease with the energy of interband emission. We discuss this result considering different parameters: shape anisotropy, wavefunction confinement, size of the quantum dots, and piezoelectric effect.

Energy Tuning of Electronic Spin Coherent Evolution in Methylammonium Lead Iodide Perovskites

“…The exciton beatings in a transverse magnetic field, in presence of a fine structure splitting (FSS), were first observed in GaAs quantum wells [32,33], because the electronic confinement makes easier the observation of the exciton in photoluminescence spectra and enhances the electron-hole exchange interaction leading to larger FSS than in the bulk. Later on, exciton quantum beats were also observed in quantum dots [34][35][36][37]. The frequency of the exciton spin beatings obtained under resonant excitation clearly showed a non-linear dependence on magnetic field when the FSS is larger or comparable to the Zeeman splitting [32].…”