| Autor: |
Jensen, Jens, Larsen, Jacob, Hansen, Ursula B. |
| Jazyk: |
angličtina |
| Rok vydání: |
2018 |
| Předmět: |
|
| Zdroj: |
Jensen, J, Larsen, J & Hansen, U B 2018, ' Comprehensive cluster-theory analysis of the magnetic structures and excitations in CoCl 2 ·2H 2 O ', Physical Review B, vol. 97, no. 2, 024423 . https://doi.org/10.1103/PhysRevB.97.024423 |
| DOI: |
10.1103/PhysRevB.97.024423 |
| Popis: |
The magnetic properties of CoCl2·2H2O are analyzed in the mean-field/random-phase approximation using a basis of clusters with four spins along the c-axis chains of Co ions. The model gives a unifying account of the bulk properties, the spin waves, and the higher-order cluster-spin excitations. The theory describes accurately the neutron scattering measurements of the excited doublet of the S = 3/2 Co++ ions in both the antiferromagnetic and the paramagnetic phases. The theory has been applied by Larsen et al. [Phys. Rev. B 96, 174424 (2017)] for analyzing the quantum phase transition at a transverse field of 160 kOe and is found to agree closely with their observations. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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