Raman spectroscopy of the charge-orbital ordering in layered manganites

K. Yamamoto, T. Kimura, T. Ishikawa, Takuro Katsufuji, Y. Tokura

Research output: Contribution to journalArticle

60 Citations (Scopus)

Abstract

The lattice and electronic response in the course of concomitant charge and orbital-ordering transition has been investigated for single crystals of layered manganites, single-layered La0.5Sr1.5MnO4, and bilayered LaSr2Mn2O7, by Raman-scattering spectroscopy. In the charge-orbital-ordered state (T<217 K for La0.5Sr1.5MnO4 and ∼100 K<7<210 K for LaSr2Mn2O7), four phonon modes are activated in the MnO2 plane, indicating the existence of both Jahn-Teller type and breathing mode type lattice distortions. The diffuse scattering response with B1g symmetry is suppressed in the charge-orbital-ordered state, both for La0.5Sr1.5MnO4 and LaSr2Mn2O7, signaling that the fluctuation caused by the dynamical charge-orbital correlation is suppressed in the charge-orbital-ordered state. These features reveal the unique nature of the charge-orbital-ordering transition realized by the complex interplay of charge and orbital degrees of freedom.

Original languageEnglish
Pages (from-to)14706-14715
Number of pages10
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume61
Issue number21
Publication statusPublished - 2000
Externally publishedYes

Fingerprint

Manganites
Raman spectroscopy
Raman scattering
Single crystals
Spectroscopy
Scattering
orbitals
breathing
degrees of freedom
Raman spectra
single crystals
symmetry
scattering
electronics
spectroscopy

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Raman spectroscopy of the charge-orbital ordering in layered manganites. / Yamamoto, K.; Kimura, T.; Ishikawa, T.; Katsufuji, Takuro; Tokura, Y.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 61, No. 21, 2000, p. 14706-14715.

Research output: Contribution to journalArticle

Yamamoto, K. ; Kimura, T. ; Ishikawa, T. ; Katsufuji, Takuro ; Tokura, Y. / Raman spectroscopy of the charge-orbital ordering in layered manganites. In: Physical Review B - Condensed Matter and Materials Physics. 2000 ; Vol. 61, No. 21. pp. 14706-14715.
@article{6f650c85c75d49e2bfff18c8412647ba,
title = "Raman spectroscopy of the charge-orbital ordering in layered manganites",
abstract = "The lattice and electronic response in the course of concomitant charge and orbital-ordering transition has been investigated for single crystals of layered manganites, single-layered La0.5Sr1.5MnO4, and bilayered LaSr2Mn2O7, by Raman-scattering spectroscopy. In the charge-orbital-ordered state (T<217 K for La0.5Sr1.5MnO4 and ∼100 K<7<210 K for LaSr2Mn2O7), four phonon modes are activated in the MnO2 plane, indicating the existence of both Jahn-Teller type and breathing mode type lattice distortions. The diffuse scattering response with B1g symmetry is suppressed in the charge-orbital-ordered state, both for La0.5Sr1.5MnO4 and LaSr2Mn2O7, signaling that the fluctuation caused by the dynamical charge-orbital correlation is suppressed in the charge-orbital-ordered state. These features reveal the unique nature of the charge-orbital-ordering transition realized by the complex interplay of charge and orbital degrees of freedom.",
author = "K. Yamamoto and T. Kimura and T. Ishikawa and Takuro Katsufuji and Y. Tokura",
year = "2000",
language = "English",
volume = "61",
pages = "14706--14715",
journal = "Physical Review B-Condensed Matter",
issn = "0163-1829",
publisher = "American Institute of Physics Publising LLC",
number = "21",

}

TY - JOUR

T1 - Raman spectroscopy of the charge-orbital ordering in layered manganites

AU - Yamamoto, K.

AU - Kimura, T.

AU - Ishikawa, T.

AU - Katsufuji, Takuro

AU - Tokura, Y.

PY - 2000

Y1 - 2000

N2 - The lattice and electronic response in the course of concomitant charge and orbital-ordering transition has been investigated for single crystals of layered manganites, single-layered La0.5Sr1.5MnO4, and bilayered LaSr2Mn2O7, by Raman-scattering spectroscopy. In the charge-orbital-ordered state (T<217 K for La0.5Sr1.5MnO4 and ∼100 K<7<210 K for LaSr2Mn2O7), four phonon modes are activated in the MnO2 plane, indicating the existence of both Jahn-Teller type and breathing mode type lattice distortions. The diffuse scattering response with B1g symmetry is suppressed in the charge-orbital-ordered state, both for La0.5Sr1.5MnO4 and LaSr2Mn2O7, signaling that the fluctuation caused by the dynamical charge-orbital correlation is suppressed in the charge-orbital-ordered state. These features reveal the unique nature of the charge-orbital-ordering transition realized by the complex interplay of charge and orbital degrees of freedom.

AB - The lattice and electronic response in the course of concomitant charge and orbital-ordering transition has been investigated for single crystals of layered manganites, single-layered La0.5Sr1.5MnO4, and bilayered LaSr2Mn2O7, by Raman-scattering spectroscopy. In the charge-orbital-ordered state (T<217 K for La0.5Sr1.5MnO4 and ∼100 K<7<210 K for LaSr2Mn2O7), four phonon modes are activated in the MnO2 plane, indicating the existence of both Jahn-Teller type and breathing mode type lattice distortions. The diffuse scattering response with B1g symmetry is suppressed in the charge-orbital-ordered state, both for La0.5Sr1.5MnO4 and LaSr2Mn2O7, signaling that the fluctuation caused by the dynamical charge-orbital correlation is suppressed in the charge-orbital-ordered state. These features reveal the unique nature of the charge-orbital-ordering transition realized by the complex interplay of charge and orbital degrees of freedom.

UR - http://www.scopus.com/inward/record.url?scp=0001659730&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0001659730&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0001659730

VL - 61

SP - 14706

EP - 14715

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 0163-1829

IS - 21

ER -