Avoided quasiparticle decay and enhanced excitation continuum in the spin-1/2 near-Heisenberg triangular antiferromagnet Ba3CoSb2O9
We explore the magnetic excitations of the spin-1/2 triangular antiferromagnet Ba3CoSb2O9 in its 120 degree ordered phase using single-crystal high-resolution inelastic neutron scattering. Sharp magnons with no decay are observed throughout reciprocal space, with a strongly renormalized dispersion a...
Main Authors: | Macdougal, D, Williams, S, Prabhakaran, D, Bewley, RI, Voneshen, DJ, Coldea, R |
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格式: | Journal article |
语言: | English |
出版: |
American Physical Society
2020
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