Christine BOEGLIN

Christine BOEGLIN

Directrice de Recherche, Surfaces and Interfaces (DSI)christine.boeglin@ipcms.unistra.fr
Station: +33(0)3 88 10 70 28, +33(0)3 88 10 70 35Office: 1041
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RESEARCH

Ultrafast Magnetization Dynamics by XMCD

Ultrafast spin and orbital dynamics by f-slicing

Ultrafast Single-shot X-ray Imaging

Ultrafast demagnetization in a domain network

Nanomagnetism : from atoms to bulk

– Magnetic anisotropy (XMCD, XMLD)

– Magnetic coupling in oxydes (XMCD, XMLD)

– Magnetic domains in oxydes (XMCD-PEEM, XMLD-PEEM)

Nanostructured-thin-films

– Surface alloys

– Clusters

– Nanostructures in Oxydes

– Atomic diffusion

– Structures and Morphologies

CURSUS

2007- : Development of ultrafast magnetization dynamics using XMCD at the femto-slicing source BESSY II and  X-FEL source Stanford.

1997-2006 : Extention to  clusters and sub-monolayer magnetism using XMC(L)D at ESRF and Daresbury synchrotron, combining structural and magnetic informations by STM, X-ray diffraction and XMC(L)D.

1992-1997: CNRS at IPCMS : Research activity at Synchrotron LURE – Grand Est beam line – development of circular and linear magnetic dichroism [XMC(L)D] using photoemission and absorption spectroscopies.

1990-1991: Post-Doc at Freie Universität Berlin- BESSY I, in the group of J. Kirschner

1990 : PhD at University of Strasbourg

Selected References

♣ V. Lopez-Flores, M-A. Mawass, J. Herrero-Albillos, A.A. Uenal, S. Valencia, F. Kronast, and C. Boeglin, « A local view of the laser induced magnetic domain dynamics in CoPd stripe domains at the picosecond time scale », Journal of Physics: Condensed Matter, vol. 32, 465801, 2020, doi:https://doi.org/10.1088/1361-648X/aba1ac.

♣ T. Ferté, N. Bergeard, G. Malinowski, E. Terrier, L. L. Guyader, K. Holldack, M. Hehn, et C. Boeglin, « Ultrafast demagnetization in buried Co80Dy20 as fingerprint of hot-electron transport », Journal of Magnetism and Magnetic Materials, vol. 485, p. 320 ‑ 324, 2019, doi:https://doi.org/10.1016/j.jmmm.2019.04.068.

♣ T. Ferté, N. Bergeard, G. Malinowski, R. Abrudan, T. Kachel, K. Holldack, M. Hehn, and C. Boeglin
Ultrafast hot-electron induced quenching of Tb 4f magnetic order  Phys. Rev. B 96, 144427

♣  T. Ferté, N. Bergeard, L. Le Guyader, M. Hehn, G. Malinowski, E. Terrier, E. Otero, K. Holldack, N. Pontius, and C. Boeglin
Element-resolved ultrafast demagnetization rates in ferrimagnetic CoDy Phys. Rev. B 96, 134303 (2017)

♣ Emmanuelle Jal, Víctor López-Flores, Niko Pontius, Tom Ferté, Nicolas Bergeard, Christine Boeglin, Boris Vodungbo, Jan Lüning, and Nicolas Jaouen
Structural dynamics during laser-induced ultrafast demagnetization Phys. Rev. B 95, 184422 (2017)

♣ Mathieu G. Silly, Tom Ferté, Marie Agnès Tordeux, Debora Pierucci, Nathan Beaulieu, et al.. Pump−probe experiments at the TEMPO beamline using the low-α operation mode of Synchrotron SOLEIL Journal of Synchrotron Radiation, 2017, 24 (4), pp.886-897.

♣ N. Bergeard, S. Schaffert, V. Lopez-Flores, N. Jaouen, J. Geilhufe, C. M. Gunther, M. Schneider, C. Graves, T. Wang, B. Wu, A. Scherz, C. Baumier, R. Delaunay, F. Fortuna, M. Tortarolo, B. Tudu, O. Krupin, M. P. Minitti, J. Robinson, W. F. Schlotter, J. J. Turner, Jan Luning, S. Eisebitt, and C. Boeglin, Irreversible transformation of ferromagnetic ordered stripe domains in single-shot infrared-pump/resonant-x-ray-scattering-probe experiments. Phys. Rev. B 91, 054416 (2015)

♣ Walid Baaziz, et al. Tuning of Synthesis Conditions by Thermal Decomposition toward Core-Shell CoxFe1-xO@CoyFe3-yO4 and CoFe2O4 Nanoparticles with Spherical and Cubic Shapes. Chemistry of Materials, pp 5063–5073; 08/2014, DOI: 10.1021/cm502269s

♣ N. Bergeard et al. ,« Ultrafast angular momentum transfer in multisublattice ferrimagnets.” Nature Communications 5, 3466 (2014). (link to pub.).

♣ V. López-Flores, et al., « Role of critical spin fluctuations in ultrafast demagnetization of transition-metal rare-earth alloys.” Phys. Rev. B 87, 214412 (2013).

♣ B. Vodungbo, et al., “Laser-induced ultrafast demagnetization in the presence of a nanoscale magnetic domain network.” Nature Communications. 3, 999 (2012), DOI : 10.1038/ncomms2007. link

♣ T. Wang, et al., “Femtosecond Single-shot X-ray Imaging of Nanoscale Ferromagnetic Order“, Phys. Rev. Lett. 108 , 267403 (2012). pdf

♣ V. López-Flores, et al., « Ultrafast angular momentum transfer studied by time-resolved X-ray magnetic circular dichroism.” Phys. Rev. B 86, 014424 (2012).(pdf)

♣ C. Boeglin, et al., “ Distinguishing the ultrafast dynamics of spin and orbital moments in solids ” Nature 465, 458-461 (2010).  link

♣ C. Boeglin, et al., “Temperature dependence of magnetic coupling in ultrathin NiO/Fe3O4(001) films”, Phys. Rev. B 80 (2009) 035409.(pdf)

♣ M. Pilard, et al., “Magnetic properties of coupled ultra-thin NiO/Fe3O4(001) films.” Phys. Rev. B 76, 214436 (2007).(pdf)

♣ C. Boeglin, et al., “In-plane magnetocrystalline anisotropy observed on Fe/Cu(111) nanostructures grown on stepped surfaces “, Phys. Rev B 66 (2002) 014439.(pdf)