Chiral spin-wave excitations of the spin-5/2 trimers in the langasite compound Ba3NbFe3Si3O14

TY - JOUR

T1 - Chiral spin-wave excitations of the spin-5/2 trimers in the langasite compound Ba3NbFe3Si3O14

AU - Jensen, Jens

PY - 2011/9/2

Y1 - 2011/9/2

N2 - The inelastic scattering of neutrons from magnetic excitations in the antiferromagnetic phase of the langasite compound Ba3NbFe 3Si2O14 is analyzed theoretically. In the calculations presented, the strongly coupled spin-52 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.

AB - The inelastic scattering of neutrons from magnetic excitations in the antiferromagnetic phase of the langasite compound Ba3NbFe 3Si2O14 is analyzed theoretically. In the calculations presented, the strongly coupled spin-52 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.

U2 - 10.1103/PhysRevB.84.104405

DO - 10.1103/PhysRevB.84.104405

M3 - Journal article

SN - 2469-9950

VL - 84

SP - 104405

JO - Physical Review B

JF - Physical Review B

IS - 10

ER -