Spin wave spectra of single crystal <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>CoPS</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:math>
Andrew Wildes, B. Fåk, Ursula Hansen, M. Enderle, J. R. Stewart, Luc Testa, H. M. Rønnow, Chaebin Kim, Je‐Geun Park
Abstract
CoPS${}_{3}$ is a van der Waals antiferromagnet with the Co${}^{2+}$ ions forming decoupled honeycomb layers. It was a candidate to host exotic magnetic properties such as valence-bond states or Kitaev-like physics. Here, the authors show, using neutron inelastic scattering, that CoPS${}_{3}$ does not have these states. Instead, well-defined excitations are observed that are accurately modeled using linear spin wave theory with high-spin $S$=3/2 and biaxial single-ion anisotropy, giving insight for the reasons behind the absence of exotic states.
Topics & Concepts
PhysicsAntiferromagnetismAnisotropySpin waveBrillouin zoneSpectral lineInelastic neutron scatteringCondensed matter physicsHeisenberg modelScatteringAtomic physicsFerromagnetismInelastic scatteringOpticsQuantum mechanicsHigh-pressure geophysics and materialsElectronic and Structural Properties of Oxides2D Materials and Applications