Abstract.
Quasi-elastic and inelastic neutron scattering studies of the quasi-one-dimensional S=2 antiferromagnet MnCl3(C10D8N2) are reported. The quasi-elastic measurements exhibit a broad peak at Q≈0.69 Å-1, which is consistent with short-range antiferromagnetic coupling between neighboring Mn3+ ions. Inelastic experiments, at 150 mK and Q=0.70 Å-1, reveal decreased magnetic scattering at energies less than 0.2 meV when compared to similar studies at 20 K. These results provide microscopic evidence for the presence of a Haldane gap and are consistent with the bulk magnetization measurements of Granroth et al.
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Recieved: 18 July 2001 / Accepted: 24 October 2001
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Granroth, G., Nagler, S., Coldea, R. et al. Neutron-scattering studies of the S = 2 antiferromagnetic chain MnCl3(C10D8N2) . Appl Phys A 74 (Suppl 1), s868–s870 (2002). https://doi.org/10.1007/s003390101160
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DOI: https://doi.org/10.1007/s003390101160