Abstract
Electromagnon, magnetic excitation driven by an electric field of light, has been investigated for a series of perovskite manganites $R{\text{MnO}}_{3}$. Two distinct excitations commonly appear in the spiral spin-ordered state, and systematic changes in their peak positions and spectral weights were observed as a function of the radius of the $R$-ion or equivalently of spin-exchange interaction energies. By comparing the results with the spin-wave calculation based on the Heisenberg model, the higher-lying excitation is assigned to the zone-edge magnon. The strong electric-dipole activity of these magnetic excitations is discussed in terms of dynamic coupling among the collective modes.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
