Correlation of electronic structure and ordered charge and orbital patterns for single-layered manganites in a wide hole-doping range (0x1)

Y. S. Lee, T. Arima, S. Onoda, Y. Okimoto, Y. Tokunaga, R. Mathieu, X. Z. Yu, J. P. He, Y. Kaneko, Y. Matsui, N. Nagaosa, and Y. Tokura
Phys. Rev. B 75, 144407 – Published 6 April 2007

Abstract

We investigated the doping-dependent evolution of the charge-orbital ordering (CO-OO) phase using optical spectroscopy of a series of single-layer manganites, La1xSr1+xMnO4 (x=0 and 1) and Pr1xCa1+xMnO4 (0.3x0.7). We found that the electronic response of the CO-OO phase changes asymmetrically with respect to the addition or removal of eg electrons from x=12. Especially, low-energy optical spectra depend strongly on the modulation vector of striped phase in a higher doping region (x12). This finding highlights the role of the nanoscale structure of eg ordering in the electronic property of the striped phase in the layered manganite.

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  • Received 29 January 2007

DOI:https://doi.org/10.1103/PhysRevB.75.144407

©2007 American Physical Society

Authors & Affiliations

Y. S. Lee1,2, T. Arima1,3, S. Onoda1, Y. Okimoto4, Y. Tokunaga1, R. Mathieu1, X. Z. Yu1, J. P. He1, Y. Kaneko1, Y. Matsui5, N. Nagaosa4,6, and Y. Tokura1,4,6

  • 1Spin Superstructure Project and Multiferroics Project, ERATO, Japan Science and Technology Agency, Tsukuba 305-8562, Japan
  • 2Department of Physics, Soongsil University, Seoul 156-743, Korea
  • 3Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
  • 4Correlated Electron Research Center (CERC), National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 4, Tsukuba 305-8562, Japan
  • 5Advanced Materials Laboratory, National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan
  • 6Department of Applied Physics, University of Tokyo, Tokyo 113-8656, Japan

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Issue

Vol. 75, Iss. 14 — 1 April 2007

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