Three-Dimensional Bulk Electronic Structures of Ca1.5Sr0.5RuO4 Studied by Soft X-ray Angle-Resolved Photoemission

Details Three-Dimensional Bulk Electronic Structures of Ca1.5Sr0.5RuO4 Studied by Soft X-ray Angle-Resolved Photoemission Three-Dimensional Bulk Electronic Structures of Ca1.5Sr0.5RuO4 Studied by Soft X-ray Angle-Resolved Photoemission

2007-11-14

arxiv.org/abs/0711.2160v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 3 figures

Scientific paper

We report on experimental data of the three-dimensional bulk Fermi surfaces of the layered strongly correlated Ca1.5Sr0.5RuO4 system. The measurements have been performed by means of hn-depndent bulk-sensitive soft x-ray angle-resolved photoemission technique. Our experimental data evinces the bulk Fermi surface topology at kz~0 to be qualitatively different from the one observed by surface-sensitive low-energy ARPES. Furthermore, stronger kz dispersion of the circle-like gamma Fermi surface sheet is observed compared with Sr2RuO4. Thus in the paramagnetic metal phase, Ca1.5Sr0.5RuO4 compound is found to have rather three-dimensional electronic structure.

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