Electronic and magnetic properties under femtosecond laser excitation, from the Gd single crystal to the ferrimagnetic alloys
type: Dataset
description: Those thesis works are included in the framework of the study of ultrafast magnetization dynamics. First of all I introduce theoretical aspects, then experimental aspects of this kind of experiments.In this aim, we have studied the answer of ferromagnetic alloys of different compositions with a bench of time resolved magneto optical Kerr effect measurement, then in a second part, the magnetization and valence band dynamics of the epitaxial Gadolinium on tungsten. In this framework, we studied the oxidization of the Gd, which limits in the time the studies. In the end, we focus on a disturbing process that happens during the study of electrons dynamics in photoemission, the space charge effect. This can generate photoelectrons from metals, with a multiphotonic process. We propose in this last part a theoretical model to explain this phenomenon.These works are included in the development of SOLEIL synchrotron facility, in order to allow the development of the FEMTOSLICING, that will next allow to perform element resolved experiments within a time resolution of a hundredth of femtoseconds.
identifier: NNT: 2013PA112275
issued: 2026-05-06T04:50:15.098462
language: fr
modified: 2026-05-06T04:50:15.098467
contact point: Organization
  fn: CCSD
keyword: alliages-ferrimagnetiques
keyword: dynamique-ultrarapide-de-laimantation
keyword: ferromagnetic-alloys
keyword: gadolinium
keyword: infoeu-reposemanticsdoctoralthesis
keyword: physcondcm-genphysics-physicscondensed-matter-cond-matother-cond-matother
keyword: rayonnement-synchrotron
keyword: synchrotron-radiation
keyword: theses
keyword: ultrafast-magnetization-dynamics
landing page: https://theses.hal.science/tel-00953656

Electronic and magnetic properties under femtosecond laser excitation, from the Gd single crystal to the ferrimagnetic alloys
type: Distribution
format: HTML
issued: 2026-05-06T04:50:15.103660
modified: 2026-05-06T04:50:15.084485
access URL: https://theses.hal.science/tel-00953656

test_moissonnage_selune
type: Agent