| Téléchargement | - Voir la version finale : Unusual behaviour of the spin-phonon coupling in the quasi-one-dimensional antiferromagnet RbCoCl₃ (PDF, 1.2 Mio)
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| DOI | Trouver le DOI : https://doi.org/10.1038/s41598-022-18073-3 |
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| Auteur | Rechercher : Cottam, M. G.; Rechercher : Lockwood, D. J.1 |
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| Affiliation | - Conseil national de recherches Canada. Centre de recherche en métrologie
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| Format | Texte, Article |
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| Sujet | materials science; optics and photonics; physics |
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| Résumé | We present an experimental and theoretical study for the lattice vibrational (phonon) modes in the quasi-one-dimensional (or chain-like) antiferromagnet RbCoCl₃ at low temperatures both above and below the two different magnetic phase transitions. Clear evidence is found for the role of spin-phonon interactions in providing a temperature-dependent contribution for the frequencies of the E₁g and E₂g symmetry phonons that occur with frequencies comparable to those of the spin wave excitations (magnons) in this compound. The behaviour in RbCoCl₃, as studied here by Raman scattering experiments, is quite different from that typically observed in rutile-structure antiferromagnets where the spin-phonon coupling has been well characterized. The theory is modified to take account of the strong Ising-like component in the spin Hamiltonian. This enables the spin-phonon coupling parameters to be deduced, with the analysis also revealing the onset of an extra frequency shift for the phonons below the transition temperature Tₙ₁ = 28 K associated with magnetic ordering along the Co chains. |
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| Date de publication | 2022-08-18 |
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| Maison d’édition | Springer Nature |
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| Licence | |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Identificateur | 18073 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 19234cc3-77cd-447a-b6b3-afec39701015 |
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| Enregistrement créé | 2023-07-13 |
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| Enregistrement modifié | 2024-01-23 |
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