TY  - JOUR
AU  - Malvestuto, M.
AU  - Carleschi, E.
AU  - Fittipaldi, R.
AU  - Gorelov, E.
AU  - Pavarini, E.
AU  - Cuoco, M.
AU  - Maeno, Y.
AU  - Parmigiani, F.
AU  - Vecchione, A.
TI  - Electronic structure trends in the Sr(n+1)Ru(n)O(3n+1) family (n=1,2,3)
JO  - Physical review / B
VL  - 83
IS  - 16
SN  - 1098-0121
CY  - College Park, Md.
PB  - APS
M1  - PreJuSER-17644
SP  - 165121
PY  - 2011
N1  - 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.
AB  - 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.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000290113200003
DO  - DOI:10.1103/PhysRevB.83.165121
UR  - https://juser.fz-juelich.de/record/17644
ER  -