Nature of the Spin Dynamics and 1/3 Magnetization Plateau in frustrated spin-2 chain system Ca3Co2O6
Ising-like spin-chain compound Ca3Co2O6 has recently attracted a lot of attention because of its interesting magnetic properties, such as field-induced magnetization steps, time-dependent magnetic order, and nanoscale magnetic fluctuations. In our recent inelastic neutron scattering study, a gapped band of magnetic excitation, dispersing between ~27 and 30.5 meV (along the chain direction), with a bandwidth of ~3.5 meV, was observed. The gap was minimum at zone center and maximum at zone boundary. The observed large ratio of the gap to bandwidth (~7.7) and no dispersion perpendicular to the chain direction confirmed that this material is highly 1D. In the proposed work, we plan to investigate the magnetic excitation under an applied magnetic (along the chain axis) to understand the origin of 1/3 magnetization plateau and spin dynamics in Ca3Co2O6.
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JAIN Anil; D.T. Adroja; Dmytro Inosov; IVANOV Alexandre; ONYKIIENKO Yevhen; PORTNICHENKO Pavlo and Yuliia Tymoshenko. (2016). Nature of the Spin Dynamics and 1/3 Magnetization Plateau in frustrated spin-2 chain system Ca3Co2O6. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-01-1502
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