Homogeneous and Goldstone modes of spin excitations in Cr1/3NbS2 helimagnet
Institute of Problems of Chemical Physics RAS,
Received: 24 April 2013
Received in final form: 16 June 2013
Published online: 1 August 2013
Contributions of homogeneous and Goldstone modes of the spin precession were distinguished in FMR spectra of Cr1/3NbS2 chiral helimagnet. The resonance field of homogeneous mode is determined by uniaxial magnetic anisotropy. The resonance field of Goldstone mode is determined by six-fold anisotropy in basal plane. For the first time, it has been shown experimentally that effective excitation of Goldstone mode is realized only when microwave magnetic field vector h is perpendicular to wave vector of magnetic structure Q.
Key words: Solid State and Materials
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag, 2013