Journal
INORGANIC CHEMISTRY FRONTIERS
Volume 8, Issue 9, Pages 2373-2384Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0qi01148g
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Funding
- Marie Sklodowska-Curie actions, EU project 'SamSD' [748635]
- European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program [648295]
- Marie Curie Actions (MSCA) [748635] Funding Source: Marie Curie Actions (MSCA)
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This study provides a rational explanation of the electronic structure and magnetic properties of lanthanide single atomic magnets, filling the gap in theoretical understanding and emphasizing the need for new paradigms in understanding and interpreting these systems.
The detailed electronic structure of single atomic magnets is a crucial bit in the further understanding and design of a new generation of monoatomic magnetic elements on surfaces and in molecules. Control and manipulation of the single atomic state, as well as long relaxation of magnetization, have been demonstrated for lanthanide atoms on carefully chosen supporting substrates. However, these convincing experiments are puzzling by insufficient theoretical description, usually omitting the valence electrons of lanthanide atoms. In this work, starting with an idea of the inevitable need of local d- and p-shell electrons for a proper description of the magnetic states of lanthanide atoms, we rationalized the electronic structure and magnetic properties of Ho atom on the MgO substrate using ab initio multiconfigurational approaches. By doing so, we obtained the solution which complements experimental observations and has been able to pin-point the atomic state which most likely to be responsible for the exceptional magnetic properties of Ho on MgO. This study demonstrates that new paradigms are needed for understanding and interpretation of the lanthanide single-atomic magnets.
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