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- W3184667037 abstract "Abstract α -RuCl 3 is a major candidate for the realization of the Kitaev quantum spin liquid, but its zigzag antiferromagnetic order at low temperatures indicates deviations from the Kitaev model. We have quantified the spin Hamiltonian of α -RuCl 3 by a resonant inelastic x-ray scattering study at the Ru L 3 absorption edge. In the paramagnetic state, the quasi-elastic intensity of magnetic excitations has a broad maximum around the zone center without any local maxima at the zigzag magnetic Bragg wavevectors. This finding implies that the zigzag order is fragile and readily destabilized by competing ferromagnetic correlations. The classical ground state of the experimentally determined Hamiltonian is actually ferromagnetic. The zigzag state is stabilized by quantum fluctuations, leaving ferromagnetism – along with the Kitaev spin liquid – as energetically proximate metastable states. The three closely competing states and their collective excitations hold the key to the theoretical understanding of the unusual properties of α -RuCl 3 in magnetic fields." @default.
- W3184667037 created "2021-08-02" @default.
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- W3184667037 date "2021-07-23" @default.
- W3184667037 modified "2023-10-17" @default.
- W3184667037 title "Proximate ferromagnetic state in the Kitaev model material α-RuCl3" @default.
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- W3184667037 doi "https://doi.org/10.1038/s41467-021-24722-4" @default.
- W3184667037 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8302668" @default.
- W3184667037 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/34301938" @default.
- W3184667037 hasPublicationYear "2021" @default.