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SUMMARY:Chiral spin-wave excitations of the spin -5/2 trimers in the langa
 site compound Ba3NbFe3Si2O14
DTSTART:20120424T154500
DTSTAMP:20260501T014143Z
UID:21622c07dfa4a0d89788e3953d8b74b1d292c6d448568bc6f6b8f2ed
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Jens Jensen from University of Copenhegen\nThe 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 triangl
 es are accounted for as trimerized units. The weaker interactions between 
 the trimers are included within the mean field and random phase approximat
 ions. The theory is compared with linear spin-wave theory\, and a model is
  developed that leads to good agreement with the published results from un
 polarized and polarized neutron-scattering experiments.
LOCATION:PH L1 503
STATUS:CONFIRMED
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