Chiral spin-wave excitations of the spin -5/2 trimers in the langasite compound Ba3NbFe3Si2O14
Event details
| Date | 24.04.2012 |
| Hour | 15:45 |
| Speaker | Prof. Jens Jensen from University of Copenhegen |
| Location |
PH L1 503
|
| Category | Conferences - Seminars |
The inelastic scattering of neutrons from magnetic excitations in the antiferromagnetic phase of the langasite compound Ba3NbFe3Si2O14 is analyzed theoretically. In the calculations presented, the strongly coupled spin -5/2 Fe triangles are accounted for as trimerized units. The weaker interactions between the trimers are included within the mean field and random phase approximations. The theory is compared with linear spin-wave theory, and a model is developed that leads to good agreement with the published results from unpolarized and polarized neutron-scattering experiments.
Practical information
- Informed public
- Free
Organizer
- ICMP
Contact
- Prof. Henrik Ronnow