Publication

Magnons in tetragonal CuO

Henrik Moodysson Rønnow, Frédéric Mila, Marco Grioni, Simon Karl Moser, Bastien Dalla Piazza, Sara Fatale
2015
Journal Articles

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 similar to 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.

Official source

https://infoscience.epfl.ch/entities/publication/bc6396c8-9077-45e4-b594-915f679d576f

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Magnons in tetragonal CuO

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