| Téléchargement | - Voir la version finale : Unusual behaviour of the spin-phonon coupling in the quasi-one-dimensional antiferromagnet RbCoCl₃ (PDF, 1.2 Mio)
|
|---|
| DOI | Trouver le DOI : https://doi.org/10.1038/s41598-022-18073-3 |
|---|
| Auteur | Rechercher : Cottam, M. G.; Rechercher : Lockwood, D. J.1 |
|---|
| Affiliation | - Conseil national de recherches du Canada. Centre de recherche en métrologie
|
|---|
| Format | Texte, Article |
|---|
| Sujet | materials science; optics and photonics; physics |
|---|
| 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. |
|---|
| Date de publication | 2022-08-18 |
|---|
| Maison d’édition | Springer Nature |
|---|
| Licence | |
|---|
| Dans | |
|---|
| Langue | anglais |
|---|
| Publications évaluées par des pairs | Oui |
|---|
| Identificateur | 18073 |
|---|
| Exporter la notice | Exporter en format RIS |
|---|
| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
|---|
| Identificateur de l’enregistrement | 19234cc3-77cd-447a-b6b3-afec39701015 |
|---|
| Enregistrement créé | 2023-07-13 |
|---|
| Enregistrement modifié | 2024-01-23 |
|---|
