Ferrimagnetic spin waves in honeycomb and triangular layers of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi mathvariant="normal">Mn</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">Si</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">Te</mml:mi><mml:mn>6</mml:mn></mml:msub></mml:math>
Gabriele Sala, Jiao Lin, Anjana Samarakoon, David Parker, Andrew F. May, M. B. Stone
Abstract
The compound Mn${}_{3}$Si${}_{2}$Te${}_{6}$ consists of alternating honeycomb and triangular lattice layers of Mn sites along the $c$ axis. This geometry leads to competing antiferromagnetic interactions that result in ferrimagnetic order. This arrangement, coupled with a small spin-orbit coupling on the Mn sites, results in anisotropic thermodynamic measurements. Here, inelastic neutron scattering experiments are examined to refine the exchange interactions and to examine the extent of the spin-orbit coupling via quantification of the anisotropic exchange parameters.
Topics & Concepts
FerrimagnetismAntiferromagnetismAnisotropyInelastic neutron scatteringCoupling (piping)Condensed matter physicsPhysicsScatteringSpin (aerodynamics)Materials scienceLattice (music)Neutron scatteringQuantum mechanicsThermodynamicsMagnetizationMagnetic fieldMetallurgyAcoustics2D Materials and ApplicationsMagnetic and transport properties of perovskites and related materialsAdvanced Condensed Matter Physics