Strong Three-magnon Scattering in Cuprates by Resonant X-rays
Ament, Luuk J. P. · Brink, Jeroen van den
Original · EN
We show that Resonant Inelastic X-ray scattering (RIXS) is sensitive to three-magnon excitations in cuprates. Even if it requires three electrons to simultaneously flip their spin, the RIXS tri-magnon scattering amplitude is not small. At the Cu L-edge its intensity is generally larger than the bi-magnon one and at low transferred momentum even larger than the single-magnon intensity. At the copper M-edge the situation is yet more extreme: in this case three-magnon scattering is dominating over all other magnetic channels.
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