Electronic structure trends in the Srn+1RunO 3n+1 family (n=1,2,3)

M. Malvestuto, E. Carleschi, R. Fittipaldi, E. Gorelov, E. Pavarini, M. Cuoco, Y. Maeno, F. Parmigiani, A. Vecchione

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)


The identification of electronic states and the analysis of their evolution with n is key to understanding n-layered ruthenates. To this end, we combine polarization-dependent O 1s x-ray absorption spectroscopy, high-purity Sr n+1RunO3n+1 (n=1,2,3) single crystals, and ab initio and many-body calculations. We find that the energy splitting between the empty x2-y2 and 3z2-1 state is considerably smaller than previously suggested and that, remarkably, Sr bands are essential to understanding the spectra. At low energy, we identify the main difference among the materials with a substantial rearrangement of t2g orbital occupations with increasing n. This rearrangement is controlled by the interplay of Coulomb repulsion, dimensionality, and changes in the t2g crystal field.

Original languageEnglish
Article number165121
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number16
Publication statusPublished - 19 Apr 2011

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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