Ru-Pan Wang

PhD Candidate

Employed since: September 2014
E-mail: R.Wang (at)
Room: 4th floor study area

X-ray spectroscopy of magnetic metal oxide thin films

X-ray absorption (XAS), magnetic circular dichroism (MCD) and Resonant Inelastic X-ray Scattering (RIXS) are element selective probes to determine the local electronic and magnetic structure of molecules and materials. In structured, mixed-valence materials the coupling of the different orbitals on the metal ions provides important information and x-ray spectroscopy is a tool that can provide this information.

We try to use soft X-ray RIXS-MCD spectra as more accurately fingerprint. Using RIXS we can probe the optical excitation spectrum resonant at a core level, turning it into an element and valence/state specific tool. The metal oxide thin films are ideal systems to apply soft x-ray RIXS-MCD because the notorious self-absorption effects can be circumvented.