| Texto completo | |
| Autor(es): Mostrar menos - |
van Veenendaal, M.
;
Poldi, E. H. T.
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Veiga, L. S. I.
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Bencok, P.
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Fabbris, G.
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Tartaglia, R.
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Mcchesney, J. L.
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Freeland, J. W.
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Hemley, R. J.
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Zheng, H.
;
Mitchell, J. F.
;
Yan, J. -q.
;
Haskel, D.
Número total de Autores: 13
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| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICAL REVIEW B; v. 107, n. 21, p. 13-pg., 2023-06-28. |
| Resumo | |
The recent prediction that honeycomb lattices of Co2+ (3d7) ions could host dominant Kitaev interactions provides an exciting direction for exploration of new routes to stabilizing Kitaev's quantum spin liquid in real materials. Na3Co2SbO6 has been singled out as a potential material candidate provided that spin and orbital moments couple into a Jeff = 12 ground state, and that the relative strength of trigonal crystal field and spin-orbit coupling acting on Co ions can be tailored. Using x-ray linear dichroism (XLD) and x-ray magnetic circular dichroism (XMCD) experiments, alongside configuration interaction calculations, we confirm the counterintuitive positive sign of the trigonal crystal field acting on Co2+ ions and test the validity of the Jeff = 12 description of the electronic ground state. The results lend experimental support to recent theoretical predictions that a compression (elongation) of CoO6 octahedra along (perpendicular to) the trigonal axis would drive this cobaltate toward the Kitaev limit, assuming the Jeff = 12 character of the electronic ground state is preserved. (AU) | |
| Processo FAPESP: | 21/11170-0 - Fenômenos emergentes em sistemas com elétrons d sondados por técnicas de luz síncrotron |
| Beneficiário: | Rodolfo Tartaglia Souza |
| Modalidade de apoio: | Bolsas no Exterior - Estágio de Pesquisa - Doutorado |