Quantitative determination of the atomic scattering tensor in orbitally ordered YTiO3 by using a resonant x-ray scattering technique

H. Nakao, Y. Wakabayashi, T. Kiyama, Y. Murakami, M. v. Zimmermann, J. P. Hill, Doon Gibbs, S. Ishihara, Y. Taguchi, and Y. Tokura
Phys. Rev. B 66, 184419 – Published 18 November 2002
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Abstract

The orbitally ordered state of YTiO3 has been investigated utilizing resonant x-ray scattering (RXS) near the Ti K-edge. The RXS intensities have been observed at the 1s4p dipole transition energy (the main edge). The atomic scattering tensor of the Ti ion has quantitatively been determined by measurements of the azimuthal angle and polarization dependence of the signal at several scattering vectors. On the basis of the tensor, we discuss not only the scattering mechanism but also the wave function of the orbitally ordered state, finding it to be a linear combination of two t2g orbitals. In addition, RXS at the 1s3d transition energy (the pre-edge) was also observed. This signal was found to have the same azimuthal angle and polarization dependence as that at the main edge.

  • Received 17 July 2002

DOI:https://doi.org/10.1103/PhysRevB.66.184419

©2002 American Physical Society

Authors & Affiliations

H. Nakao1,2,*, Y. Wakabayashi1,3, T. Kiyama1,†, Y. Murakami1,2,*, M. v. Zimmermann4,‡, J. P. Hill4, Doon Gibbs4, S. Ishihara5,*, Y. Taguchi5,§, and Y. Tokura5,6

  • 1Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, 305-0801, Japan
  • 2CREST, Japan Science and Technology Corp., Tsukuba, 305-0045, Japan
  • 3Department of Physics, Keio University, Yokohama 223-8522, Japan
  • 4Department of Physics, Brookhaven National Laboratory, Upton, New York 11973-5000
  • 5Department of Applied Physics, University of Tokyo, Tokyo 113-8656, Japan
  • 6Joint Research Center for Atom Technology (JRCAT), Tsukuba, 305-0046, Japan

  • *Present address: Graduate School of Science, Tohoku University, Sendai 980-8578, Japan.
  • Present address: Department of Physics, Nagoya University, Nagoya 464-8602, Japan.
  • Present address: HASYLAB at DESY, Notkestrasse 85, D-22603 Hamburg, Germany.
  • §Present address: Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan.

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Vol. 66, Iss. 18 — 1 November 2002

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