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ALBA II - Workshop on Spintronics and synchrotron radiation

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Description

ALBA II - Workshop on Spintronics and synchrotron radiation

The event includes several presentations in the morning. In the afternoon, the workshop tries to stimulate via a round table a discussion of perspectives and interest of the spintronics community in Spain and ALBA users of materials and a reflection of what techniques, approaches and instrumentation would be important, covering the capabilities and use of the ARPES, XAS/XLD/XMLD/XMCD and XPEEM imaging instruments. 

ZOOM Links for attendees will be available below before the event

Recording - Session I
Recording - Session II
Recording Session III & Open Roundtable
Contact
    • 09:00 → 11:15
      Session I
      Convener: Prof. Luis Hueso (CIC nanoGUNE)
      • 09:00
        Welcome 15m
        Speaker: Klaus Attenkofer
      • 09:15
        Time- and spatially-resolved magnetization dynamics induced by spin-orbit torques 30m
        Speaker: Prof. Pietro Gambardella (Department of materials, ETH Zurich )
      • 09:45
        Spin-orbit and magnetic proximity effect in van dar Waals Materials 30m
        Speaker: Prof. Sergio O. Valenzuela (ICN2)
      • 10:15
        Symmetry and topology in epitaxial Co films and nanostructures 30m
        Speaker: Dr Jan Vogel (Neel Institute, CNRS Grenoble)
      • 10:45
        Spintronics opportunities and directions at IMDEA Nanoscience: from Graphene-based spin-orbitronics to neuro nanotechnology applications 30m
        Speaker: Dr Julio Camarero (IMDEA Nanoscience & Univ. Autonoma Madrid)
    • 11:15 → 11:30
      Break 15m
    • 11:30 → 13:30
      Session II
      Convener: Prof. Josep Fontcuberta (ICMAB-CSIC)
      • 11:30
        Topological spin textures in thin films and multilayers 30m
        Speaker: Prof. Vincent Cros (Unité Mixte de Physique CNRS/Thales)
      • 12:00
        Some insights into topological charges in magnetism 30m
        Speaker: Prof. Salvador Ferrer (Alba synchrotron light source)
      • 12:30
        Some examples of research on spintronics at ICMAB 30m
        Speaker: Dr Carlos Frontera (Institut de Ciència de Materials de Barcelona (ICMAB/CSIC))
      • 13:00
        ALBA ARPES Capabilities for investigating spintronic materials 15m
        Speaker: Dr Massimo Tallarida (ALBA-CELLS)
        presentation_spintronics_Workshop.pptx
      • 13:15
        ALBA XMCD Capabilities for investigating spintronic materials 15m
        Speaker: Dr Manuel Valvidares
    • 13:30 → 14:15
      Break 45m
    • 14:15 → 16:45
      Session III
      Convener: Dr Stefania Pizzini (Institut Neel, CNRS Grenoble)
      • 14:15
        ALBA PEEM capabilities for investigating spintronic materials 15m
        Speaker: Dr Michael Joachim Ulrich Foerster
      • 14:30
        ALBA TXM Capabilities for investigating spintronic materials 15m
        Speaker: Dr Lucia Aballe Aramburu
      • 14:45
        Pushing the limits of magnetic microscopy: time, space and analytics. Why and how? 30m
        Speaker: Prof. Olivier Fruchart (SPINTEC IRIG / CEA Grenoble )
      • 15:15
        Coherent X-rays for three dimensional imaging of magnetic systems and their dynamics 30m
        Speaker: Dr Claire Donnelly (Cambridge University)
      • 15:45
        New developments in synchrotron radiation based ferromagnetic resonance techniques 30m

        New developments in synchrotron radiation based ferromagnetic resonance techniques
        David M. Burn1, Shilei Zhang2, Gerrit van der Laan1, Thorsten Hesjedal3
        1Magnetic Spectroscopy, Diamond Light Source, Didcot, UK
        2ShanghaiTech University, Shanghai, China
        3Unversity of Oxford, Oxford, UK

        The understanding of the magnetization dynamics of complex magnetic systems is the prerequisite for their controlled engineering, opening the door for the development of novel high-speed devices. A macroscopic understanding of the dynamic magnetization is commonly obtained through ferromagnetic resonance (FMR) measurements. Supported by micromagnetic simulations and theoretical modelling, some insight into their microscopic behavior is gained. X-ray detected ferromagnetic resonance (XFMR), on the other hand, provides a direct element-specific and time-resolved probe of the magnetization dynamics of technologically relevant layered spin valve and TMR structures [1,2]. Examples of XFMR measurements on such trilayer structures will be discussed.

        To study the dynamics of topological magnetic systems, such as skyrmions, XFMR is unfortunately not suitable since the net magnetization probed by the x-ray beam vanishes. Magnetic skyrmions have shown a variety of novel features due to their unique topological nature, including new microwave excitation modes [3] such as clockwise and counterclockwise rotating, and breathing modes. Due to the periodic nature of the skyrmion lattice, resonant x-ray diffraction is very sensitive to probing this phase in, e.g., Cu2OSeO3 [4]. By combining resonant magnetic x-ray diffraction with FMR, diffractive FMR (DFMR) can give access to the real-space spin dynamics of a system. DFMR is a modal spectroscopy technique, potentially opening new pathways for the development of spintronic devices [5]. The technique will be introduced and discussed in the context of a cycloidal spin system.

        References:
        [1] G. van der Laan, J. Electron Spectrosc. Relat. Phenom. 220, 137 (2017).
        [2] C. Klewe et al., Sync. Rad. News 33, 12 (2020).
        [3] N. Nagaosa and Y. Tokura, Nat. Nanotechnol. 8, 899 (2013).
        [4] S. L. Zhang et al., Phys. Rev. B 93, 21440 (2016).
        [5] D.M. Burn et al., Nano Lett. 20, 345 (2020).

        Speaker: Prof. Thorsten Hesjedal
      • 16:15
        Spin Currents in Antiferromagnets 30m
        Speaker: Prof. Axel Hoffman (a)
    • 16:45 → 17:15
      Open Roundtable 30m