Emmanuelle Jal
48
Documents
Présentation
**Research Interest**
I am interested in ultra-thin magnetic thin films and more particularly on femtomagnetism. To probe the magnetization in such thin materials I am mainly using soft x-rays and XUV. The interactions between XUV/x-rays with matter allow to have a spatial resolution of the order of the nanometer, to be chemically selective and to be magnetic sensitive. Depending on the used geometry: in transmission, reflectivity or scattering one can be sensitive in depth, or in the sample plane. My favourite technique is to use x-ray Resonant Magnetic Reflectivity (XRMR) to probe the inhomogeneity of the magnetization in depth. To be time resolved I am using XUV/X-rays pulses of hundreds of femtoseconds provided by femtoslicing or Free Electron Laser (FEL) sources at SOLEIL, BESSY, LCLS, FLASH, FERMI, European XFEL, as well as High Harmonic Generation sources at the Laboratoire d'Optique Appliqué.
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**Fundings**
2018-2021: CNRS Momentum <http://www.cnrs.fr/fr/une/actus/2017/momentum-laureats.html>
2014: Post-doctoral grant of « Direction Général des Armements (DGA) »
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**Professional Experience**
**Chargée de Recherche, Sorbonne Université, Paris, France**
Study of ultrafast magnetization dynamics by time- and spatial-resolved x-ray scattering and spectroscopy experiment.
- Laboratoire Chimie Physique - Matière et Rayonnement
- Responsible of the time-resolved x-ray resonant magnetic reflectivity activity and femtoslicing experiments
- Performing time resolved experiment measurements: all optical, XFEL
Oct 2017 – present **Teaching assistant and Postdoctoral Fellow, Sorbonne Université, Paris, France**
Study of the ultrafast magnetization dynamics thanks to time- and spatial-resolved X-ray scattering and spectroscopy experiment
- Laboratoire Chimie Physique - Matière et Rayonnement, Jan Lüning
- Teaching chemistry and physics at undergraduate level
- Growing thin magnetic films by sputtering
- Responsible of the time-resolved x-ray resonant magnetic reflectivity activity
- Performing time resolved experiment measurements
Sept 2015 – Sep 2017 **Research Associate at SLAC, Stanford, USA**
X-ray spectroscopy with temporal (fs) and spatial (nm) resolution to study all optical switching in ferromagnetic materials
- Stanford Institute for Materials & Energy Sciences, H. Dürr and J. Stöhr group
- Grant of « Direction Général des Armements (DGA) »
- Use of synchrotron radiation (SSRL, ALS), and Free Electron Laser (X-FEL) at LCLS
- Responsible of the beamtime at Berkeley synchrotron (ALS)
- Dynamic study of magnetic and electronic properties of CoPt and FePt thin films
USA, Jan 2014 – Aug 2015 **PhD at Université de Grenoble, Grenoble, France**
Study of magnetic films by soft X-ray Resonant Magnetic Reflectivity (XRMR): magnetic profile in various situations (temperature and anisotropy)
- Institut Néel, Jean-Marc Tonnerre
- X-ray resonant magnetic reflectivity formalism
- Use of synchrotron radiation to study the magnetic depth profile of Fe/Cu and Fe/Ag thin films (SOLEIL (SEXTANTS), ESRF, PSI)
- International collaboration with the Max Planck Institute (Halle, Allemagne)
- Teaching physics at undergraduate and graduate levels at PHELMA engineering school
Mar 2010 – Oct 2013 **Research Student, Imperial College, London, UK**
Study of martensitic transformation in shape memory alloys
- Department of Materials, David Dye group
- UROP grant (Undergraduate Research Opportunities Programme)
UK, Jun 2009 – Aug 2009 **Research Student, Institut Lumière Matière, Lyon, France**
Magnetic study of CoPt nanoparticules with Florent Tournus
July 2008 ---
**Education**
**Ph.D. in Condensed Matter Physics**
Adviser: Jean-Marc Tonnerre, France 2010 - 2013 **Master Diploma in Condensed Matter Physics**
Université de Grenoble, France 2009 - 2010 **Engineering Diploma of Physics Nanoscience** PHELMA, Grenoble - INP, France
2007 - 2010 **Classes préparatoires** Lycée du Parc, Lyon, France
2005 - 2007
Publications
Investigating Coherent Magnetization Control with Ultrashort THz pulsesFLASH THz User Workshop, Rui Pan, Jan 2023, Hambourg & Online, Germany
Communication dans un congrès
hal-03966853v1
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Soft X-ray pump – soft X-ray probe experiment with sub-15 fs time resolution for the study of ultrafast demagnetizationFLASH FL24 Evaluation Panel, Rolf Treusch, Oct 2022, Hambourg & Online, Germany
Communication dans un congrès
hal-03974502v1
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XRMS view on ultrafast demagnetizationREXS 2022, Jun 2022, Paris, France
Communication dans un congrès
hal-03974515v1
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Multidimensional Raman Solitons as Drivers of the High Harmonic Generation ProcessCongrès de l'ACP 2021, Association canadienne des physiciens et physiciennes, Jun 2021, Virtuel - Online, France
Communication dans un congrès
hal-03966763v1
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X-ray driven ultrafast demagnetization in ferrimagnets4th Ultrafast Magnetism Conference (UMC 2019), Roy Chantrell; Richard Evans; Gonzalo Vallejo-Fernandez; Jane Harrison, Oct 2019, York, United Kingdom
Communication dans un congrès
hal-03974881v1
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Soft X-ray pump – soft X-ray probe experiment with sub-10 fs time resolution for the study of ultrafast demagnetization4th Ultrafast Magnetism Conference (UMC 2019), Roy Chantrell; Richard Evans; Gonzalo Vallejo-Fernandez; Jane Harrison, Oct 2019, York, United Kingdom
Communication dans un congrès
hal-03974755v1
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Investigation of ultrafast magnetic dynamics through Faraday effect and linearly polarized high order harmonics16th International Conference on X-Ray Lasers (ICXRL 2018), Michaela Kozlová; Jaroslav Nejdl, Oct 2018, Prague, Czech Republic
Communication dans un congrès
hal-03974699v1
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Laser-induced ultrafast demagnetization and perpendicular magnetic anisotropy reduction in a Co88Tb12 thin film with stripe domainsUltrafast Magnetic Conference, Sep 2022, Nancy, France. 2022
Poster de conférence
hal-03974509v1
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Electron Dynamics at High-Energy Densities in Nickel from Non-linear Resonant X-ray Absorption Spectra2022
Pré-publication, Document de travail
hal-03967096v1
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