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Observation of Spin Fluctuations in a High-Tc Parent Compound Using Resonant Inelastic X-ray Scattering by Freelon, B.; Medaglia, P. G.; Tebano, A.; Balestrino, G.; Okada, K.; Kotani, A.; Vernay, F.; Devereaux, T. P.; Glans, P. A.; Learmonth, T.; Smith, K. E.; Kilcoyne, A. L. D.; Rude, B.; Furtado, I.; Guo, J. -H. is a scholarly article available to read on EtoBox.

What is Observation of Spin Fluctuations in a High-Tc Parent Compound Using Resonant Inelastic X-ray Scattering about?

We report the first observation of soft-x-ray scattering from spin fluctuations in a high-Tc parent compound. An antiferromagnetic charge transfer insulator, CaCuO2, was irradiated by Cu M-edge soft x-rays. Ultra-high resolution measurements of scattered intensity revealed magnon-magnon excitations, due to spin exchange scattering, as low-energy loss features. The process is analogous to optical Raman scattering. The spectra provide the first measurement of the two-magnon excitation energy and the antiferromagnetic exchange parameter in infinite-layer CaCuO2. The results reveal resonant inelastic soft x-ray scattering as a novel probe of the spin dynamics in cuprates.

Author

Freelon, B.; Medaglia, P. G.; Tebano, A.; Balestrino, G.; Okada, K.; Kotani, A.; Vernay, F.; Devereaux, T. P.; Glans, P. A.; Learmonth, T.; Smith, K. E.; Kilcoyne, A. L. D.; Rude, B.; Furtado, I.; Guo, J. -H.

Published

2008

Language

EN