Abstract
Magnetic correlation in with kagome and triangular lattices was studied through inelastic-neutron-scattering measurements on a single crystal sample. The broad magnetic excitation was observed below 45 meV and showed dispersions both within the plane and along the axis. The wave vector with the minimum energy of the magnetic excitation was totally different from the magnetic Bragg point. Our analysis with the first-moment-sum rule suggests that Co ions in form a unique three-dimensional network with the geometrically frustration.
- Received 12 March 2020
- Revised 13 May 2020
- Accepted 17 June 2020
DOI:https://doi.org/10.1103/PhysRevB.101.214444
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