2008/11/30 by Rolando Valdés Aguilar, R. Valdés Aguilar, Maxim Mostovoy +8 · 2 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Condensed matter physics #Coupling (piping) #Diffraction #Ferroelectricity #Inelastic neutron scattering #Magnetic and transport properties of perovskites and related materials #Materials science #Multiferroics #Multiferroics and related materials #Neutron scattering #Orthorhombic crystal system #Physics #Quantum mechanics #Scattering #Spins #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.102.047203
published as Phys. Rev. Lett. 102, 047203, (2009) · 4 pages, 3 figures, submitted
arxiv created 2009/01/29 · openalex publication_date 2009/01/29 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Electromagnon excitations in multiferroic orthorhombic RMnO3 are shown to result from the Heisenberg coupling between spins despite the fact that the static polarization arises from the much weaker Dzyaloshinskii-Moriya exchange interaction. We present a model incorporating the structural characteristics of this family of manganites that is confirmed by far infrared transmission data as a function of temperature and magnetic field and inelastic neutron scattering results. A deep connection is found between the magnetoelectric dynamics of the spiral phase and the static magnetoelectric coupling in the collinear E phase of this family of manganites.