Recently it was predicted theoretically and confirmed experimentally that in cuprates single-magnon dispersions can be mapped out with resonant inelastic x-ray scattering (RIXS) at the copper L(3) edge. To further establish RIXS as a viable technique we investigate the momentum and incident photon polarization dependence of the single-magnon spectral weight in a variety of layered undoped antiferromagnetic compounds. The agreement of experimental and theoretical results bolsters the assignment of RIXS spectral features to single magnons. This detailed analysis allows to disentangle single-magnon scattering from other spectral contributions. Moreover, it is a necessary premise for future research aimed at investigating processes that modulate spectral weights beyond the predictions of linear spin-wave theory.
Braicovich, L., Moretti Sala, M., Ament, L., Bisogni, V., Minola, M., Balestrino, G., et al. (2010). Momentum and polarization dependence of single-magnon spectral weight for Cu L3 -edge resonant inelastic x-ray scattering from layered cuprates. PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, 81(17), 174533-1.
Momentum and polarization dependence of single-magnon spectral weight for Cu L3 -edge resonant inelastic x-ray scattering from layered cuprates
BALESTRINO, GIUSEPPE;DI CASTRO, DANIELE;
2010-01-01
Abstract
Recently it was predicted theoretically and confirmed experimentally that in cuprates single-magnon dispersions can be mapped out with resonant inelastic x-ray scattering (RIXS) at the copper L(3) edge. To further establish RIXS as a viable technique we investigate the momentum and incident photon polarization dependence of the single-magnon spectral weight in a variety of layered undoped antiferromagnetic compounds. The agreement of experimental and theoretical results bolsters the assignment of RIXS spectral features to single magnons. This detailed analysis allows to disentangle single-magnon scattering from other spectral contributions. Moreover, it is a necessary premise for future research aimed at investigating processes that modulate spectral weights beyond the predictions of linear spin-wave theory.File | Dimensione | Formato | |
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