Ultrafast Electron Dynamics in Coupled and Uncoupled HgTe Quantum Dots
S.G. Mizrahi,
M. Weis,
E. Péronne
et al.
Abstract:In this article, we study electron dynamics in HgTe quantum dots with a 1.9 μm gap, a material relevant for infrared sensing and emission, using ultrafast spectroscopy with 35 fs time resolution. Experiments have been carried out at several probing photon energies around the gap, which allows us to follow the relaxation path of the photoexcited electrons. We compare such dynamics in two kind of samples, HgTe quantum dots with long ligands and with short ligands, in order to distinguish the role of the coupling… Show more
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