Spin density wave as a superposition of two magnetic states of opposite chirality and its implications
arXiv:1808.05044 · doi:10.1021/acs.inorgchem.8b01494
Abstract
A magnetic solid with weak spin frustration tends to adopt a noncollinear magnetic structure such as cycloidal structure below a certain temperature and a spin density wave (SDW) slightly above this temperature. The causes for these observa-tions were explored by studying the magnetic structures of BaYFeO4, which undergoes an SDW and a cycloidal phase transi-tion below 48 and 36 K, respectively, in terms of density func-tional theory calculations. We show that an SDW structure aris-es from a superposition of two magnetic states of opposite chi-rality, an SDW state precedes a chiral magnetic state due to the lattice relaxation, and whether an SDW is transversal or longitudinal is governed by the magnetic anisotropy of magnetic ions.
4 pages, 4 figures not including the SI
References in corpus (7)
- Spin-Orbit Coupling and Ion Displacements in Multiferroic TbMnO3
- Enhanced ferroelectric polarization by induced Dy spin-order in multiferroic DyMnO3
- Strong Dzyaloshinskii-Moriya Interaction and Origin of Ferroelectricity in Cu2OSeO3
- Theory of spin-phonon coupling in multiferroic Mn perovskites
- Giant Ferroelectric Polarization of CaMn7O12 Induced by a Combined Effect of Dzyaloshinskii-Moriya Interaction and Exchange Striction
- Spin model of magnetostrictions in multiferroic Mn perovskites
- 57Fe Mössbauer study of unusual magnetic structure of multiferroic 3R-AgFeO2