Spin waves in manganese monoxide

Masahumi Kohgi, Yoshikazu Ishikawa, Isao Harada, Kazuko Motizuki

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Abstract

The spin waves in MnO have been studied at various temperatures from 4.2 K to the Néel temperature TN of 117 K by means of neutron inelastic scattering techniques. The dispersion curves in the [001], [111] and [111] direction have been determined. Using the spin Hamiltonian with distance dependent n.n. interaction, n.n.n. interaction and dipole-dipole interaction, the spin wave theory involving magnon-magnon interaction has been developed. It has been found that the theory interprets not only the spin wave dispersion curves at 4.2 K but also its temperature dependence up to T/Tn=0.9. The magnon density of states has been calculated.

Original languageEnglish
Pages (from-to)112-122
Number of pages11
JournalJournal of the Physical Society of Japan
Volume36
Issue number1
Publication statusPublished - Jan 1974
Externally publishedYes

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Kohgi, M., Ishikawa, Y., Harada, I., & Motizuki, K. (1974). Spin waves in manganese monoxide. Journal of the Physical Society of Japan, 36(1), 112-122.