Spin wave theory study of neutron intensity, magnetic field, and anisotropy of Type IIA FCC antiferromagnet

Abstract

We study the spin dynamics in a 3D quantum antiferromagnet on a face-centered cubic (FCC) lattice. The effects of magnetic field, single-ion anisotropy, and biquadratic interactions are investigated using linear spin wave theory with spins in a canted basis about the Type IIA FCC antiferromagnetic ground state structure which is known to be stable. We calculate the expected finite frequency neutron scattering intensity and give qualitative criteria for typical FCC materials MnO and CoO. The magnetization reduction due to quantum zero point fluctuations is also analyzed.

8 pages, 9 figures; Section IVB heading corrected, Figs. 3 - 5 redrawn

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Cited by in corpus (4)

• Quantum versus thermal fluctuations in the fcc antiferromagnet: alternative routes to order by disorder
• Magnon spectrum of the Weyl semimetal half-Heusler compound GdPtBi
• Magnetic Fluctuations and the Spin-Orbit Interaction in Mott Insulating CoO
• Order by disorder in a four flavor Mott-insulator on the fcc lattice