Resonant inelastic x-ray scattering as a probe of the phase and excitations of the order parameter of superconductors.

@article{Marra2013ResonantIX,
  title={Resonant inelastic x-ray scattering as a probe of the phase and excitations of the order parameter of superconductors.},
  author={Pasquale Marra and Steffen Sykora and Krzysztof Wohlfeld and Jeroen van den Brink},
  journal={Physical review letters},
  year={2013},
  volume={110 11},
  pages={
          117005
        }
}
The capability to probe the dispersion of elementary spin, charge, orbital, and lattice excitations has positioned resonant inelastic x-ray scattering (RIXS) at the forefront of photon science. Here we develop the scattering theory for RIXS on superconductors, calculating its momentum-dependent scattering amplitude. Considering superconductors with different pairing symmetries, we show that the low-energy scattering is strongly affected by the superconducting gap and coherence factors. This… 
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TLDR
The results show that RIXS spectra can distinguish between s± and s++ wave gap functions in the singlet pairing case and an analogous intensity redistribution at small momenta can reveal the presence of a chiral p-wave triplet pairing.
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The determination of the symmetry of the energy gap is crucial for research on the microscopic mechanisms of unconventional superconductivity. Here, we demonstrate experimentally that high-resolution…
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TLDR
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An end-station for resonant inelastic X-ray scattering and (resonant) X-ray emission spectroscopy at beamline ID20 of ESRF - The European Synchrotron is presented. The spectrometer hosts five crystal…
Probing Hidden Orders with Resonant Inelastic X-Ray Scattering
We propose a general scheme for the derivation of the signals resonant inelastic (and elastic) x-ray scattering (RIXS) gives access to. In particular, we find that RIXS should allow to directly…
Propagation and Scattering of High-Intensity X-Ray Pulses in Dense Atomic Gases and Plasmas
Nonlinear spectroscopy in the x-ray domain is a promising technique to explore the dynamics of elementary excitations in matter. X-rays provide an element specificity that allows them to target…
Theory of fluctuating charge ordering in the pseudogap phase of cuprates via a preformed pair approach
We study the static and dynamic behavior of charge ordering within a d-wave pair pseudogap (pg) scenario. This is addressed using a density-density correlation function derived from the standard pg…
Resonant Inelastic X-Ray Scattering in Strongly Correlated Copper Oxides
In this chapter, I describe the RIXS technique for the study of electronic excitations in strongly correlated copper oxides from experimental point of view.
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The exponential growth of the many-particle Hilbert space results in unfeasible scaling of memory and computation time requirements with system size, even in the simplest case of spinless fermions in…
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