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

M. Uruma; A. Sekiyama; H. Fujiwara; M. Yano; H. Fujita; S. Imada; T. Muro; I. A. Nekrasov; Y. Maeno; S. Suga

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

Strongly Correlated Electrons 2007-11-15 v1 Superconductivity

Authors: M. Uruma , A. Sekiyama , H. Fujiwara , M. Yano , H. Fujita , S. Imada , T. Muro , I. A. Nekrasov , Y. Maeno , S. Suga

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Abstract

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.

Keywords

angle-resolved photoemission spectroscopy fermi surface electronic structure

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@article{arxiv.0711.2160,
  title  = {Three-Dimensional Bulk Electronic Structures of Ca1.5Sr0.5RuO4 Studied by Soft X-ray Angle-Resolved Photoemission},
  author = {M. Uruma and A. Sekiyama and H. Fujiwara and M. Yano and H. Fujita and S. Imada and T. Muro and I. A. Nekrasov and Y. Maeno and S. Suga},
  journal= {arXiv preprint arXiv:0711.2160},
  year   = {2007}
}

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4 pages, 3 figures

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

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