Spin-wave directional anisotropies in antiferromagnetic Ba${}_3$NbFe${}_3$Si${}_2$O${}_{14}$

C. Stock, R. D. Johnson, N. Giles-Donovan +14

Ba${}_3$NbFe${}_3$Si${}_2$O${}_{14}$ (langasite) is structurally and magnetically single domain chiral with the magnetic helicity induced through competing symmetric exchange interac…