Modelling of the spin dynamics of an individual magnetic atom in a quantum dot
type: Dataset
description: We have studied the spin dynamics of an individual Mn atom embedded a CdTe quantum dot. Our results show that the Mn spin relaxation is faster when the quantum dot contains an exciton. This can result in an optical orientation of the Mn spin. The valence band mixing is the critical parameter for the fast relaxation rates of the Mn spin in the exchange field of the exciton. This valence band mixing is controlled by the shape and strain of the quantum dot. The influence of these parameters on the optical pumping dynamics were analyzed in detail. Our simulation of optical pumping are in good agreement with experiments. The coherent dynamics of an individual Mn spin was also investigated. We discussed the influence of the coherent dynamics of the coupled electronic and nuclear spins on the optical pumping. We have shown that optically controlled coupling between electronic and nuclear spins could be used for Mn spin switching. We finally demonstrated that the combination of resonant laser and microwave fields can be used to optically detect the magnetic resonance of a Mn spin in a CdTe quantum dot.
identifier: NNT: 2012GRENY119
issued: 2026-05-24T08:28:36.060526
language: fr
modified: 2026-05-24T08:28:36.060533
contact point: Organization
  fn: CCSD
keyword: boite-quantique
keyword: diluted-magnetic-semiconductor
keyword: dynamique-de-spin
keyword: infoeu-reposemanticsdoctoralthesis
keyword: physcondcm-genphysics-physicscondensed-matter-cond-matother-cond-matother
keyword: quantum-dot
keyword: semiconducteur-magnetique-dilue
keyword: spin-dynamics
keyword: theses
landing page: https://theses.hal.science/tel-00680070

Modelling of the spin dynamics of an individual magnetic atom in a quantum dot
type: Distribution
format: HTML
issued: 2026-05-24T08:28:36.090128
modified: 2026-05-24T08:28:36.026426
access URL: https://theses.hal.science/tel-00680070

test_moissonnage_selune
type: Agent