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26TH SYMPOSIUM ON PHOTONICS AND OPTICS SPO 2025

5–7 Nov 2025
Zoom and Faculty of Physics, Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
Europe/Zurich timezone

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Session

Synchrotron Photoemission & X-ray Spectroscopies

5 Nov 2025, 14:20
Room 261(Laboratory building) (Zoom and Faculty of Physics, Taras Shevchenko National University of Kyiv, Kyiv, Ukraine)

Room 261(Laboratory building)

Zoom and Faculty of Physics, Taras Shevchenko National University of Kyiv, Kyiv, Ukraine

The conference will be performed in HYBRID mode: - On-site at Faculty of Physics of Trars Shevchenko National University of Kyiv - VIa ZOOM platform

Conveners

Synchrotron Photoemission & X-ray Spectroscopies

  • Danylo Babich (PSI - Paul Scherrer Institut)

Presentation materials

There are no materials yet.

  1. 155. Controlling Dirac–Rashba and Double Dirac Surface States in Topological Crystalline Insulator via Ultrathin Transition Metal Layers
    Dr Valentine Volobuev (International Research Centre MagTop, Institute of Physics, Polish Academy of Sciences; National Technical University ”KhPI”)
    05/11/2025, 14:20
    USyNC Workshop
    Invited Talk

    The band structure at the topological insulator/magnetic metal (TI/MM) interface is of great significance for realizing exotic spin-dependent phenomena and advanced spin–orbitronic devices. To investigate this interface, we employ a model system consisting of submonolayer transition metal (TM) adsorbates on the surface of a topological crystalline insulator (TCI) and examine it using the...

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  2. 187. Looking for Topological Quantum Materials With ARPES
    Dr Volodymyr Bezguba (Kyiv Academic University)
    05/11/2025, 14:50
    USyNC Workshop
    Invited Talk

    Quantum materials is a rather broad class of materials which have properties emerging from quantum mechanics and collective quantum effects, but can’t be explained in classical terms (perfect example being superconductors). Non-trivial topology of their electronic structure brings in even more interesting phenomenon which can be very desired for applications such as quantum computers and...

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  3. 190. A ToF-PAX-RIXS Endstation for Combined ARPES and RIXS Studies at the P04 Beamline
    Dr Sergii Chernov (DESY)
    05/11/2025, 15:15
    USyNC Workshop
    Oral

    We report a new ToF-PAX-RIXS endstation at P04 beamline at PETRA III, Hamburg, a development of a promising novel approach to RIXS. It is based on a ToF photoemission microscope (momentum and real space imaging), allowing ARPES and RIXS studies carried out back-to-back. While RIXS is a powerful method for studying low-energy quasiparticle excitations like phonons or magnons, ARPES remains the...

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  4. 186. Synchrotron VUV Study of Luminescent Properties in Mn-Doped ZnO–ZrO₂ Ceramics
    Prof. Larysa Khomenkova (V. Lashkaryov Institute of Semiconductor Physics)
    05/11/2025, 15:30
    USyNC Workshop
    Invited Talk

    The luminescent behaviour of transition-metal ions strongly depends on the host lattice structure, defect concentration, and cation site occupancy. Owing to their ability to adopt multiple oxidation states, Mn ions can serve as sensitive optical probes in wide-bandgap oxide ceramics. In this work, we investigated the light-emitting properties of Mn-doped ZnO–ZrO₂ ceramics using...

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  5. 175. Copper site occupancy and valence in lead apatites via XAS at ASTRA/SOLARIS
    Mr Ihor Sukhenko (Kurdyumov Institute for Metal Physics of the NAS of Ukraine)
    05/11/2025, 15:50
    USyNC Workshop
    Oral

    We report Cu K-edge XANES/EXAFS results on a series of Cu-substituted lead apatites Pb10-xCux(YO4)6Z (x ≈ 1), Y = P, V; Z = (OH)2, F2, Cl2, Br2, I2. The aim was to test the site preference and valence state of Cu in the apatite lattice, following the experiment proposed at SOLARIS/ASTRA. XANES edge positions and comparison to CuO/Cu₂O standards demonstrate that Cu is unambiguously in the Cu2+...

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