Berlin 2012 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 50: Superconductivity: (General) Theory

TT 50.9: Vortrag

Freitag, 30. März 2012, 11:45–12:00, H 3010

Resonant inelastic x-ray scattering (RIXS) in an unconventional superconductor — •Pasquale Marra, Steffen Sykora, and Jeroen van den Brink — IFW, Dresden, Germany

The investigation of the pairing mechanism in unconventional superconductors has generated enormous interest in spectroscopic techniques which are sensitive with respect to the phase of the superconducting order parameter. We show that resonant inelastic x-ray scattering (RIXS) in combination with an appropriate high energy resolution would be a very promising method in that aspect.

Using a BCS model for unconventional superconductors we calculate the lowest order excitations which are relevant for the RIXS scattering amplitude. We compare different scenarios of pairing and show that the momentum-dependent low energy RIXS spectra are strongly influenced by coherence factors which are known to be phase-sensitive.