Nature of the Well Screened State in Hard X-Ray Mn 2p Core-Level Photoemission Measurements of La1xSrxMnO3 Films

K. Horiba, M. Taguchi, A. Chainani, Y. Takata, E. Ikenaga, D. Miwa, Y. Nishino, K. Tamasaku, M. Awaji, A. Takeuchi, M. Yabashi, H. Namatame, M. Taniguchi, H. Kumigashira, M. Oshima, M. Lippmaa, M. Kawasaki, H. Koinuma, K. Kobayashi, T. Ishikawa, and S. Shin
Phys. Rev. Lett. 93, 236401 – Published 29 November 2004

Abstract

Using hard x-ray (HX; hν=5.95keV) synchrotron photoemission spectroscopy (PES), we study the intrinsic electronic structure of La1xSrxMnO3 (LSMO) thin films. Comparison of Mn 2p core-levels with soft x-ray (SX; hν1000eV) PES shows a clear additional well-screened feature only in HX PES. Takeoff-angle dependent data indicate its bulk (20   Å) character. The doping and temperature dependence track the ferromagnetism and metallicity of the LSMO series. Cluster model calculations including charge transfer from doping-induced states show good agreement, confirming this picture of bulk properties reflected in Mn 2p core-levels using HX PES.

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  • Received 19 May 2004

DOI:https://doi.org/10.1103/PhysRevLett.93.236401

©2004 American Physical Society

Authors & Affiliations

K. Horiba1,*, M. Taguchi1, A. Chainani1, Y. Takata1, E. Ikenaga2, D. Miwa3, Y. Nishino3, K. Tamasaku3, M. Awaji2, A. Takeuchi2, M. Yabashi2, H. Namatame4, M. Taniguchi4, H. Kumigashira5, M. Oshima5, M. Lippmaa6, M. Kawasaki7, H. Koinuma8, K. Kobayashi2, T. Ishikawa3, and S. Shin1,6

  • 1Soft X-Ray Spectroscopy Laboratory, RIKEN/SPring-8, Mikazuki-cho, Hyogo 679-5148, Japan
  • 2JASRI/SPring-8, Mikazuki-cho, Hyogo 679-5198, Japan
  • 3Coherent X-Ray Optics Laboratory, RIKEN/SPring-8, Mikazuki-cho, Hyogo 679-5148, Japan
  • 4HiSOR, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan
  • 5Department of Applied Chemistry, The University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan
  • 6Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
  • 7Institute for Materials Research, Tohoku University, Sendai, Miyagi 980-8577, Japan
  • 8Materials and Structures Laboratory, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8503, Japan

  • *Electronic address: horiba@spring8.or.jp

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Vol. 93, Iss. 23 — 3 December 2004

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