Electronic structure of SrRu1xMnxO3 studied by photoemission and x-ray absorption spectroscopy

K. Horiba, H. Kawanaka, Y. Aiura, T. Saitoh, C. Satoh, Y. Kikuchi, M. Yokoyama, Y. Nishihara, R. Eguchi, Y. Senba, H. Ohashi, Y. Kitajima, and S. Shin
Phys. Rev. B 81, 245127 – Published 28 June 2010

Abstract

In order to investigate the change in the electronic structure with Mn doping of SrRu1xMnxO3 (SRMO), we have performed soft x-ray synchrotron photoemission spectroscopy (PES) and x-ray absorption spectroscopy (XAS). In the soft x-ray PES spectra, the sharp peak structure near the Fermi level (EF), which was clearly observed in SrRuO3, was suppressed accompanied with Mn doping in SRMO. In the Mn2p XAS and Mn2p3d resonant PES spectra, we have confirmed the existence of Mn3+ ions with the electron doping to Mn3deg states and Mn3d partial density of state never have finite intensity at EF in SRMO. These results suggest that the metal-insulator transition of SRMO with Mn doping is originated from the charge transfer from the itinerant Ru4dt2g bands to the localized Mn3deg orbitals.

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  • Received 8 February 2010

DOI:https://doi.org/10.1103/PhysRevB.81.245127

©2010 American Physical Society

Authors & Affiliations

K. Horiba1,*, H. Kawanaka2, Y. Aiura2, T. Saitoh3, C. Satoh4, Y. Kikuchi4, M. Yokoyama4, Y. Nishihara4, R. Eguchi1, Y. Senba5, H. Ohashi5, Y. Kitajima6, and S. Shin1,7

  • 1RIKEN SPring-8 Center, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
  • 2National Institute of Advance Industrial Science and Technology, Tsukuba, Ibaraki 305-8568, Japan
  • 3Department of Applied Physics, Tokyo University of Science, Shinjuku-ku, Tokyo 162-8601, Japan
  • 4Faculty of Science, Ibaraki University, Mito, Ibaraki 310-8512, Japan
  • 5JASRI/SPring-8, Sayo-cho, Hyogo 679-5198, Japan
  • 6Photon Factory, High Energy Accelerator Research Organization, Tsukuba, Ibaraki 305-0801, Japan
  • 7Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan

  • *Present address: Department of Applied Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan; horiba@sr.t.u-tokyo.ac.jp

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Vol. 81, Iss. 24 — 15 June 2010

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