M. Abo-bakr, J. Feikes, K. Holldack, P. Kuske, W. B. Peatman et al., Brilliant, Coherent Far-Infrared (THz) Synchrotron Radiation, Wü stefeld, G. & Hü bers, p.94801, 2003.
DOI : 10.1063/1.1347976

E. Allaria, R. Appio, L. Badano, W. A. Barletta, S. Bassanese et al., Highly coherent and stable pulses from the FERMI seeded free-electron laser in the extreme ultraviolet, Nature Photonics, vol.80, issue.10, pp.699-704, 2012.
DOI : 10.1063/1.3262502

V. Ayvazyan, N. Baboi, J. Bä-hr, V. Balandin, B. Beutner et al., First operation of a free-electron laser generating GW power radiation at 32??nm wavelength, The European Physical Journal D, vol.37, issue.2, pp.297-303, 2006.
DOI : 10.1140/epjd/e2005-00308-1

URL : https://hal.archives-ouvertes.fr/in2p3-00025157

M. Bargheer, N. Zhavoronkov, Y. Gritsai, J. C. Woo, D. S. Kim et al., Coherent Atomic Motions in a Nanostructure Studied by Femtosecond X-ray Diffraction, Science, vol.306, issue.5702, pp.1771-1773, 2004.
DOI : 10.1126/science.1104739

E. J. Beaurepaire, A. Merle, A. Daunois, and J. Y. Bigot, Ultrafast Spin Dynamics in Ferromagnetic Nickel, Physical Review Letters, vol.185, issue.22, pp.4250-4253, 1996.
DOI : 10.1002/pssb.2221850219

C. Boeglin, E. Beaurepaire, V. Halté, V. Ló-pez-flores, C. Stamm et al., Distinguishing the ultrafast dynamics of spin and orbital moments in solids, Nature, vol.90, issue.7297, pp.458-461, 2010.
DOI : 10.1209/epl/i1997-00393-0

M. Bonfim, G. Ghiringhelli, F. Montaigne, S. Pizzini, N. B. Brookes et al., Element-Selective Nanosecond Magnetization Dynamics in Magnetic Heterostructures, Physical Review Letters, vol.220, issue.16, pp.3646-3649, 2001.
DOI : 10.1016/S0304-8853(00)00513-8

M. Bonn, S. Funk, C. Hess, D. N. Denzler, C. Stampfl et al., Phonon- Versus Electron-Mediated Desorption and Oxidation of CO on Ru(0001), Science, vol.285, issue.5430, pp.1042-1045, 1999.
DOI : 10.1126/science.285.5430.1042

G. Cautero, R. Sergo, L. Stebel, P. Lacovig, P. Pittana et al., A two-dimensional detector for pump-and-probe and time resolved experiments, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol.595, issue.2, pp.447-459, 2008.
DOI : 10.1016/j.nima.2008.06.046

M. E. Couprie and J. M. Filhol, X radiation sources based on accelerators, Comptes Rendus Physique, vol.9, issue.5-6, pp.487-506, 2008.
DOI : 10.1016/j.crhy.2008.04.001

S. Eisebitt, J. Lü-ning, W. F. Schlotter, M. Lö-rgen, O. Hellwig et al., Lensless imaging of magnetic nanostructures by X-ray spectro-holography, Nature, vol.4, issue.7019, pp.885-888, 2004.
DOI : 10.1103/PhysRevLett.92.074801

A. Eschenlohr, M. Sultan, A. Melnikov, N. Bergeard, J. Wieczorek et al., alloys, Physical Review B, vol.89, issue.21, p.214423, 2014.
DOI : 10.1103/PhysRevLett.108.057202

B. Frietsch, J. Bowlan, R. Carley, M. Teichmann, S. Wienholdt et al., Disparate ultrafast dynamics of itinerant and localized magnetic moments in gadolinium metal, Nature Communications, vol.4, p.8262, 2015.
DOI : 10.1103/PhysRevB.77.224422

D. J. Higley, K. Hirsch, G. L. Dakovski, E. Jal, E. Yuan et al., Femtosecond X-ray magnetic circular dichroism absorption spectroscopy at an X-ray free electron laser, Review of Scientific Instruments, vol.87, issue.3, p.33110, 2016.
DOI : 10.1209/0295-5075/86/57002

S. K. Khan, T. Holldack, R. Kachel, R. Mitzner, and T. Quast, Femtosecond Undulator Radiation from Sliced Electron Bunches, Physical Review Letters, vol.71, issue.7, p.74801, 2006.
DOI : 10.1103/PhysRevLett.92.224801

J. B. Kortright and S. Kim, levels:???Measurement and applications, Physical Review B, vol.38, issue.18, pp.12216-12228, 2000.
DOI : 10.1103/PhysRevB.38.2297

J. P. Long, H. R. Sadeghi, J. C. Rife, and M. N. Kabler, Surface space-charge dynamics and surface recombination on silicon (111) surfaces measured with combined laser and synchrotron radiation, Physical Review Letters, vol.32, issue.10, pp.1158-1161, 1990.
DOI : 10.1063/1.1736056

V. Ló-pez-flores, J. Arabski, C. Stamm, V. Halté, N. Pontius et al., Time-resolved x-ray magnetic circular dichroism study of ultrafast demagnetization in a CoPd ferromagnetic film excited by circularly polarized laser pulse, Physical Review B, vol.9, issue.1, p.14424, 2012.
DOI : 10.1103/PhysRevB.81.100401

V. Ló-pez-flores, N. Bergeard, V. Halté, C. Stamm, N. Pontius et al., Role of critical spin fluctuations in ultrafast demagnetization of transition-metal rare-earth alloys, Physical Review B, vol.9, issue.21, p.214412, 2013.
DOI : 10.1103/PhysRevB.65.012413

M. Marsi, R. Belkhou, C. Grupp, G. Panaccione, A. Taleb-ibrahimi et al., interfaces, Physical Review B, vol.399, issue.8, pp.5070-5073, 2000.
DOI : 10.1038/21602

M. Marsi, M. E. Couprie, L. Nahon, D. Garzella, T. Hara et al., Surface states and space charge layer dynamics on Si(111)2??1: A free electron laser-synchrotron radiation study, Applied Physics Letters, vol.358, issue.7, pp.895-897, 1997.
DOI : 10.1103/PhysRevLett.68.1014

T. Pfeifer, C. Spielmann, and G. Gerber, Femtosecond x-ray science, Reports on Progress in Physics, vol.69, issue.2, pp.443-505, 2006.
DOI : 10.1088/0034-4885/69/2/R04

I. Radu, K. Vahaplar, C. Stamm, T. Kachel, N. Pontius et al., Transient ferromagnetic-like state mediating ultrafast reversal of antiferromagnetically coupled spins, Nature, vol.39, issue.7342, pp.205-208, 2011.
DOI : 10.1209/0295-5075/81/27004

L. Rettig, C. Dornes, N. Thielemann-kü-hn, N. Pontius, H. Zabel et al., Itinerant and Localized Magnetization Dynamics in Antiferromagnetic Ho, Physical Review Letters, vol.116, issue.25, p.257202, 2016.
DOI : 10.1103/PhysRev.130.1825

R. W. Schö-nlein, S. Chattopadhyay, H. H. Chong, T. E. Glover, P. A. Heimann et al., Generation of Femtosecond Pulses of Synchrotron Radiation, Science, vol.287, issue.5461, pp.2237-2340, 2000.
DOI : 10.1126/science.287.5461.2237

F. Silva, S. M. Teichmann, S. L. Cousin, M. Hemmer, and J. Biegert, Spatiotemporal isolation of attosecond soft X-ray pulses in the water window, Nature Communications, vol.55, p.6611, 2015.
DOI : 10.1103/PhysRevA.55.3204

F. Sirotti, S. Girlando, P. Prieto, L. Floreano, G. Panaccione et al., Dynamics of surface magnetization on a nanosecond time scale, Physical Review B, vol.52, issue.14, pp.9221-9224, 2000.
DOI : 10.1103/PhysRevLett.61.758

C. Stamm, T. Kachel, N. Pontius, R. Mitzner, T. Quast et al., Femtosecond modification of electron localization and transfer of angular momentum in nickel, Nature Materials, vol.92, issue.10, pp.740-743, 2007.
DOI : 10.1038/nmat1985

G. Mathieu and . Silly, PumpÀprobe experiments at SOLEIL's TEMPO beamline 11 of 12

H. Wang, Y. Xu, S. Ulonska, J. S. Robinson, P. Ranitovic et al., Bright high-repetition-rate source of narrowband extreme-ultraviolet harmonics beyond 22???eV, Nature Communications, vol.38, p.7459, 2015.
DOI : 10.1364/OL.38.004131

W. Widdra, D. Brö-cker, T. Giessel, I. V. Hertel, W. Krü-ger et al., Time-resolved core level photoemission: surface photovoltage dynamics of the SiO2/Si(100) interface, Surface Science, vol.543, issue.1-3, pp.87-94, 2003.
DOI : 10.1016/j.susc.2003.07.005

M. Yabashi, H. Tanaka, and T. Ishikawa, Overview of the SACLA facility, Journal of Synchrotron Radiation, vol.7, issue.3, pp.477-484, 2015.
DOI : 10.1038/nphoton.2012.306