| Online-Ressource |
Verfasst von: | Werner, Johannes [VerfasserIn]  |
| Hergett, Waldemar [VerfasserIn]  |
| Gertig, Mario [VerfasserIn]  |
| Park, Jaena [VerfasserIn]  |
| Koo, Changhyun [VerfasserIn]  |
| Klingeler, Rüdiger [VerfasserIn]  |
Titel: | Anisotropy-governed competition of magnetic phases in the honeycomb quantum magnet Na3Ni2SbO6 studied by dilatometry and high-frequency ESR |
Verf.angabe: | J. Werner, W. Hergett, M. Gertig, J. Park, C. Koo, and R. Klingeler |
Fussnoten: | Die Zahlen sind im Titel tiefgestellt ; Gesehen am 28.03.2018 |
Titel Quelle: | Enthalten in: Physical review |
Jahr Quelle: | 2017 |
Band/Heft Quelle: | 95(2017,21) Artikel-Nummer 214414, 7 Seiten |
ISSN Quelle: | 2469-9969 |
Abstract: | Thermodynamic properties and low-energy magnon excitations of S=1 honeycomb-layered Na3Ni2SbO6 have been investigated by high-resolution dilatometry, static magnetization, and high-frequency electron spin resonance studies in magnetic fields up to 16 T. At TN = 16.5 K, there is a tricritical point separating two distinct antiferromagnetic phases, AF1 and AF2, from the paramagnetic regime. In addition, our data imply short-range antiferromagnetic correlations at least up to ∼5TN. Well below TN, the magnetic field BC1≈9.5 T is needed to stabilize AF2 against AF1. The thermal expansion and magnetostriction anomalies at TN and BC1 imply significant magnetoelastic coupling, both of which are associated with a sign change of ∂L/∂B. The transition at BC1 is associated with softening of the antiferromagnetic resonance modes observed in the electron-spin-resonance spectra. The anisotropy gap Δ=360 GHz implies considerable uniaxial anisotropy. We deduce the crucial role of axial anisotropy favoring the AF1 spin structure over the AF2 one. While the magnetostriction data disprove a simple spin-flop scenario at BC1, the nature of a second transition at BC2 ≈ 13 T remains unclear. Both the sign of the magnetostriction and Grüneisen analysis suggest that the short-range correlations at high temperatures are of AF2 type. |
DOI: | doi:10.1103/PhysRevB.95.214414 |
URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Verlag: http://dx.doi.org/10.1103/PhysRevB.95.214414 |
| Verlag: https://link.aps.org/doi/10.1103/PhysRevB.95.214414 |
| DOI: https://doi.org/10.1103/PhysRevB.95.214414 |
Datenträger: | Online-Ressource |
Sprache: | eng |
K10plus-PPN: | 1571496920 |
Verknüpfungen: | → Zeitschrift |
Anisotropy-governed competition of magnetic phases in the honeycomb quantum magnet Na3Ni2SbO6 studied by dilatometry and high-frequency ESR / Werner, Johannes [VerfasserIn] (Online-Ressource)