https://doi.org/10.1140/epjd/s10053-023-00773-8
Regular Article – Atomic and Molecular Collisions
Coherent spin exchange scattering of low-energy electrons by Ni2+ ions in antiferromagnetic crystal NiO under surface wave resonance: experimental and theoretical results revisited
Department of Physics, Sophia University, 102-8554, Tokyo, Japan
Received:
10
August
2023
Accepted:
23
October
2023
Published online:
11
December
2023
In this report, we revisit coherent spin exchange scattering experiments with low-energy electrons by Ni2+ ions in antiferromagnetic (AF) crystal NiO. The use of the advanced low-energy electron diffraction (LEED) technique for surface analysis enables more quantitative characterization of surface atoms of Ni2+ ions based on (1) the energy dependence of LEED for “half-order beam” intensity, i.e., the I–V curve, and (2) the temperature dependence at the intensity maximum of 31 eV. In the I–V curve, resonance enhancement is clearly observed, which corresponds to a surface wave resonance (SWR) effect. Under SWR conditions, i.e., the emergence of diffracted beams propagating nearly parallel to the crystal surface, the surface-spin structure properties are investigated through the low-temperature range where the saturation phenomenon can be confirmed. Those energy dependences are also calculated by the relativistic multiple-scattering method, and the temperature dependence is compared with a molecular field model.
Guest editors: Márcio Henrique Franco Bettega, Stephen Buckman, Dragana Maric, Sylwia Ptasinska, Ron White.
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© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
