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

Transversely modulated crystal structure of charge-orbital ordered manganites Nd_1-xSr_1+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

School of Creative Science and Engineering

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

The crystallographic superstructures of the charge-orbital ordered phases were investigated for layered manganites, Nd_1-xSr_1+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 e_g electrons - best explains the charge-orbital ordered state in the manganites.

Original language	English
Article number	060405
Pages (from-to)	604051-604054
Number of pages	4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	65
Issue number	6
Publication status	Published - 2002 Feb 1

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Cite this

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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.",

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T1 - Transversely modulated crystal structure of charge-orbital ordered manganites Nd1-xSr1+xMnO4 (x = 2/3, 3/4)

AU - Nagai, T.

AU - Kimura, T.

AU - Yamazaki, A.

AU - Asaka, T.

AU - Kimoto, K.

AU - Tokura, Y.

AU - Matsui, Y.

PY - 2002/2/1

Y1 - 2002/2/1

N2 - 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.

AB - 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.

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Transversely modulated crystal structure of charge-orbital ordered manganites Nd_1-xSr_1+xMnO₄ (x = 2/3, 3/4)

Abstract

ASJC Scopus subject areas

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