Spin-wave excitations in the Ising-like spin-chain compound Ca3Co2O6
The geometrically frustrated trigonal cobaltate Ca3Co2O6 is considered to be a model system for a one-dimensional Ising-like antiferromagnet. Its crystal structure (Fig. 1) represents a hexagonal arrangement of one-dimensional chains, which consist of alternating nonmagnetic CoO6 octahedra and CoO6 trigonal prisms with a large magnetic moment. Spin-orbit coupling results in a large single-ion anisotropy of the order of 70 meV, leading to an Ising-type character of magnetism in this system. Making use of the recent progress in obtaining considerable amounts of Ca3Co2O6 single crystals that can be coaligned into a sample suitable for inelastic-scattering measurements, we propose to study magnetic excitations in this compound using the triple-axis IN8 spectrometer at ILL.
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Dmytro Inosov; FRIEMEL Gerd; IVANOV Alexandre; JAIN Anil; JANG Hoyoung; KEIMER Bernhard and LOEW Toshinao. (2013). Spin-wave excitations in the Ising-like spin-chain compound Ca3Co2O6. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-01-1215
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