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Estimating the Orientation of 4f Magnetic Moments by Classical Photoemission

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    Physical Insights into Quantum Phenomena and Function

    Estimating the Orientation of 4f Magnetic Moments by Classical Photoemission
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    The Journal of Physical Chemistry Letters

    Cite this: J. Phys. Chem. Lett. 2022, 13, 33, 7861–7869
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    https://doi.org/10.1021/acs.jpclett.2c02203
    Published August 17, 2022
    Copyright © 2022 American Chemical Society
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    Abstract

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    To use efficiently the magnetic functionalities emerging at the surfaces or interfaces of novel lanthanides-based materials, there is a need for complementary methods to probe the atomic-layer resolved magnetic properties. Here, we show that 4f photoelectron spectroscopy is highly sensitive to the collective orientation of 4f magnetic moments and, thus, a powerful tool for characterizing the related properties. To demonstrate this, we present the results of systematic study of a family of layered crystalline 4f-materials, which are crystallized in the body-centered tetragonal ThCr2Si2 structure. Analysis of 4f spectra indicates that the 4f moments at the surface experience a strong reorientation with respect to the bulk, caused by changes of the crystal-electric field. The presented database of the computed 4f spectra for all trivalent rare-earth ions in their different MJ states will facilitate the estimation of the orientation of the 4f magnetic moments in the layered 4f-systems for efficient control of their magnetic properties.

    Copyright © 2022 American Chemical Society

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    Supporting Information

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    The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acs.jpclett.2c02203.

    • Parameters of the 4f Hamiltonian, additional experimental data, and model spectra of trivalent lanthanides for differently oriented magnetic moments (PDF)

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    This article is cited by 6 publications.

    1. D. Yu. Usachov, A. V. Tarasov, D. Glazkova, M. Mende, S. Schulz, G. Poelchen, A. V. Fedorov, O. Yu. Vilkov, K. A. Bokai, V. S. Stolyarov, K. Kliemt, C. Krellner, D. V. Vyalikh. Insight into the Temperature-Dependent Canting of 4f Magnetic Moments from 4f Photoemission. The Journal of Physical Chemistry Letters 2023, 14 (24) , 5537-5545. https://doi.org/10.1021/acs.jpclett.3c01276
    2. D. Yu. Usachov, K. A. Bokai, I. I. Klimovskikh, K. Ali, F. Schiller, G. Poelchen, V. S. Stolyarov, K. Kliemt, C. Krellner, D. V. Vyalikh. Probing surface and bulk ground states of lanthanides: 4 f moment orientation through 4 d x-ray absorption spectroscopy. Physical Review B 2024, 110 (7) https://doi.org/10.1103/PhysRevB.110.075157
    3. D. Yu. Usachov, G. Poelchen, I. I. Tupitsyn, K. A. Bokai, D. Glazkova, A. V. Tarasov, M. Mende, A. V. Fedorov, V. S. Stolyarov, C. Krellner, D. V. Vyalikh. Resonant 4 f photoelectron diffraction: Insight into Yb compounds. Physical Review B 2024, 109 (24) https://doi.org/10.1103/PhysRevB.109.L241118
    4. R. Swami, M.K. Hooda, Z. Hossain. Thermodynamic and magnetotransport properties of EuAg2Ge2 single crystals. Journal of Magnetism and Magnetic Materials 2024, 589 , 171517. https://doi.org/10.1016/j.jmmm.2023.171517
    5. Kristin Kliemt, Michelle Ocker, Sarah Krebber, Susanne Schulz, Denis V. Vyalikh, Cornelius Krellner, Dmitry Yu. Usachov. Moment canting and domain effects in antiferromagnetic DyRh 2 Si 2 . Physical Review B 2023, 107 (22) https://doi.org/10.1103/PhysRevB.107.224424
    6. Artem V. Tarasov, Daria Glazkova, Susanne Schulz, Georg Poelchen, Kristin Kliemt, Alexej Kraiker, Matthias Muntwiler, Clemens Laubschat, Alexander Generalov, Craig Polley, Cornelius Krellner, Denis V. Vyalikh, Dmitry Yu. Usachov. Crystal electric field and properties of 4 f magnetic moments at the surface of the rare-earth compound TbRh 2 Si 2 . Physical Review B 2022, 106 (15) https://doi.org/10.1103/PhysRevB.106.155136
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    The Journal of Physical Chemistry Letters

    Cite this: J. Phys. Chem. Lett. 2022, 13, 33, 7861–7869
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acs.jpclett.2c02203
    Published August 17, 2022
    Copyright © 2022 American Chemical Society
    Request reuse permissions

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