Magnons in tetragonal CuO

S. Moser; N.E. Shaik; D. Samal; S. Fatale; B. Dalla Piazza; M. Dantz; J. Pelliciari; P. Olalde-Velasco; T. Schmitt; Gertjan Koster

doi:10.1103/PhysRevB.92.140404

Magnons in tetragonal CuO

S. Moser, N.E. Shaik, D. Samal, S. Fatale, B. Dalla Piazza, M. Dantz, J. Pelliciari, P. Olalde-Velasco, T. Schmitt, Gertjan Koster

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Abstract

We investigate by resonant inelastic x-ray scattering the magnetic excitations in thin films of tetragonal CuO. We identify a spin wave excitation, dispersing on two cupratelike antiferromagnetic sublattices. Its energy at the boundary of the Brillouin zone (220 meV), is significantly lower than typical values (E ∼300 meV) found in two-dimensional cuprates. A spin wave expansion starting from an extended Hubbard model suggests two possible scenarios for this energy lowering.

Original language	English
Article number	140404
Pages (from-to)	-
Number of pages	5
Journal	Physical review B: Condensed matter and materials physics
Volume	92
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevB.92.140404
Publication status	Published - 6 Oct 2015

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abstract = "We investigate by resonant inelastic x-ray scattering the magnetic excitations in thin films of tetragonal CuO. We identify a spin wave excitation, dispersing on two cupratelike antiferromagnetic sublattices. Its energy at the boundary of the Brillouin zone (220 meV), is significantly lower than typical values (E ∼300 meV) found in two-dimensional cuprates. A spin wave expansion starting from an extended Hubbard model suggests two possible scenarios for this energy lowering.",

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AU - Moser, S.

AU - Shaik, N.E.

AU - Samal, D.

AU - Fatale, S.

AU - Dalla Piazza, B.

AU - Dantz, M.

AU - Pelliciari, J.

AU - Olalde-Velasco, P.

AU - Schmitt, T.

AU - Koster, Gertjan

PY - 2015/10/6

Y1 - 2015/10/6

N2 - We investigate by resonant inelastic x-ray scattering the magnetic excitations in thin films of tetragonal CuO. We identify a spin wave excitation, dispersing on two cupratelike antiferromagnetic sublattices. Its energy at the boundary of the Brillouin zone (220 meV), is significantly lower than typical values (E ∼300 meV) found in two-dimensional cuprates. A spin wave expansion starting from an extended Hubbard model suggests two possible scenarios for this energy lowering.

AB - We investigate by resonant inelastic x-ray scattering the magnetic excitations in thin films of tetragonal CuO. We identify a spin wave excitation, dispersing on two cupratelike antiferromagnetic sublattices. Its energy at the boundary of the Brillouin zone (220 meV), is significantly lower than typical values (E ∼300 meV) found in two-dimensional cuprates. A spin wave expansion starting from an extended Hubbard model suggests two possible scenarios for this energy lowering.

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DO - 10.1103/PhysRevB.92.140404

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JF - Physical review B: Condensed matter and materials physics

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Magnons in tetragonal CuO

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