Incommensurate magnetic phase and its dynamics in a hexagonal antiferromagnet without an inversion center
Stefanovskii E. P. , Sukstanskii A. L.
A phenomenological theory is constructed for modulated triangular antiferromagnetic structures of exchange-relativistic origin in a hexagonal magnetic material lacking an inversion center. The magnetic structure of the compound CsCuCl3 is explained. The spectrum of natural linear magnetic excitations is derived. The theoretical field dependence of the antiferromagnetic-resonance frequencies agrees well with experimental data.