Is Haldane's singlet—triplet transition found in CsNiCl3?

doi:10.1016/0304-8853(92)90370-4

Journal of Magnetism and Magnetic Materials

Volumes 104–107, Part 2, 2 February 1992, Pages 809-810

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Abstract

We investigated magnetic excitations in CsNiCl₃ in magnetic fields up to 9.5 T by means of inelastic unpolarised neutron scattering. Assuming a threefold splitting at Q=(001) as observed in a previous polarised experiment at low fields, we find similar field behaviour at 2 and 7 K. The field dependence of the upper mode at Q=(0.39 0.39 1),T=2 K, could point to a longitudinal character of the excitation as predicted by Affleck.

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Is Haldane's singlet—triplet transition found in CsNiCl3?

Abstract

J. Appl. Phys.

J. Phys.: Condens. Matter

Phys. Rev. Lett.

Phys. Rev. Lett.

Phys. Rev. Lett.

Is Haldane's singlet—triplet transition found in CsNiCl₃?