JUM@P '11: Joint Users' Meeting at PSI 2011

Measuring spin excitations in insulating and superconducting cuprates by soft x-ray RIXS

16 Sept 2011, 14:50

30m

WHGA/001 (PSI)

Talk Resonant Inelastic and Elastix X-ray Scattering Resonant Inelastic and Elastic X-ray Scattering

Speaker

Prof. Marco Grioni (EPF Lausanne, Switzerland)

Description

Resonant inelastic x-ray scattering (RIXS) offers a unique view on local and collective excitations in strongly correlated materials, complementary to established techniques like neutrons, optics, or photoemission. The commissioning at the Swiss Light Source of the high-resolution (E/ΔE~10'000) SAXES soft x-ray spectrometer opened the way to measurements of the full spin wave spectrum in the cuprates, and the accurate evaluation of crucial model parameters. I will discuss RIXS data for the paradigmatic AFM parent compound SrCuO2Cl2 and, for Bi-2212, the evolution of the magnetic excitations into the superconducting part of the phase diagram.

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RIXS

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Talk