TY - JOUR
T1 - Transversely modulated crystal structure of charge-orbital ordered manganites (formula presented) (formula presented) 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
Y1 - 2002
N2 - The crystallographic superstructures of the charge-orbital ordered phases were investigated for layered manganites, (formula presented) (formula presented) 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 “Wigner-crystal” model-accompanied with a charge-density wave (CDW) of (formula presented) 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, (formula presented) (formula presented) 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 “Wigner-crystal” model-accompanied with a charge-density wave (CDW) of (formula presented) electrons-best explains the charge-orbital ordered state in the manganites.
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U2 - 10.1103/PhysRevB.65.060405
DO - 10.1103/PhysRevB.65.060405
M3 - Article
AN - SCOPUS:85038293037
SN - 0163-1829
VL - 65
SP - 1
EP - 4
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
IS - 6
ER -