%0 Journal Article
%A Malvestuto, M.
%A Carleschi, E.
%A Fittipaldi, R.
%A Gorelov, E.
%A Pavarini, E.
%A Cuoco, M.
%A Maeno, Y.
%A Parmigiani, F.
%A Vecchione, A.
%T Electronic structure trends in the Sr(n+1)Ru(n)O(3n+1) family (n=1,2,3)
%J Physical review / B
%V 83
%N 16
%@ 1098-0121
%C College Park, Md.
%I APS
%M PreJuSER-17644
%P 165121
%D 2011
%Z E.G. and E.P. acknowledge the Julich BlueGene/P Grant No. JIFF41, as well as financial support by the Deutsche Forschungsgemeinschaft through the research unit FOR 1346.
%X 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 Srn+1RunO3n+1 (n = 1,2,3) single crystals, and ab initio and many-body calculations. We find that the energy splitting between the empty x(2) - y(2) and 3z(2) - 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 t(2g) orbital occupations with increasing n. This rearrangement is controlled by the interplay of Coulomb repulsion, dimensionality, and changes in the t(2g) crystal field.
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000290113200003
%R 10.1103/PhysRevB.83.165121
%U https://juser.fz-juelich.de/record/17644