Transversely modulated crystal structure of charge-orbital ordered manganites Nd1-xSr1+xMnO4 (x = 2/3, 3/4)

T. Nagai*, T. Kimura, A. Yamazaki, T. Asaka, K. Kimoto, Y. Tokura, Y. Matsui

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

The crystallographic superstructures of the charge-orbital ordered phases were investigated for layered manganites, Nd1-xSr1+xMnO4 (x=2/3, 3/4), by high-resolution electron microscopy (HREM) at low temperature. Transverse and sinusoidal structural distortion giving rise to the superstructure were successfully observed in HREM images at 80 K. We also performed the simulations of electron diffraction patterns and HREM images, which support the transverse modulations. The observation implies that a new kind of "Wignercrystal" model - accompanied with a charge-density wave (CDW) of eg electrons - best explains the charge-orbital ordered state in the manganites.

Original languageEnglish
Article number060405
Pages (from-to)604051-604054
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume65
Issue number6
Publication statusPublished - 2002 Feb 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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