Local symmetry breaking in Eu1-xLaxB6

M. Song; In Sang Yang; C. W. Seo; H. Cheong; J. Y. Kim; B. K. Cho

doi:10.1016/j.jmmm.2006.10.221

Local symmetry breaking in Eu_1-xLa_xB₆

M. Song, In Sang Yang, C. W. Seo, H. Cheong, J. Y. Kim, B. K. Cho

Department of Physics

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

5 Scopus citations

Abstract

We report inelastic light (Raman) scattering study of Eu_1-xLa _xB₆ (x = 0, 0.05, 0.1, 0.2, 0.3). As La is doped, the T_2g mode becomes broad and asymmetric, the E_g mode splits into doublet, and the A_1g mode shifts to higher frequencies, while the undoped EuB₆ show sharp three phonon peaks, T_2g, E_g, and A_1g modes. There are around six possible phonon peaks in the Raman spectra of La-doped EuB₆. These additional peaks are explained by symmetry lowering of boron octahedra due to tilting/rotating.

Original language	English
Pages (from-to)	1019-1020
Number of pages	2
Journal	Journal of Magnetism and Magnetic Materials
Volume	310
Issue number	2 SUPPL. PART 2
DOIs	https://doi.org/10.1016/j.jmmm.2006.10.221
State	Published - Mar 2007

Keywords

Inelastic light scattering
Metal-insulator transition
Strongly correlated system

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10.1016/j.jmmm.2006.10.221

Cite this

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title = "Local symmetry breaking in Eu1-xLaxB6",

abstract = "We report inelastic light (Raman) scattering study of Eu1-xLa xB6 (x = 0, 0.05, 0.1, 0.2, 0.3). As La is doped, the T2g mode becomes broad and asymmetric, the Eg mode splits into doublet, and the A1g mode shifts to higher frequencies, while the undoped EuB6 show sharp three phonon peaks, T2g, Eg, and A1g modes. There are around six possible phonon peaks in the Raman spectra of La-doped EuB6. These additional peaks are explained by symmetry lowering of boron octahedra due to tilting/rotating.",

keywords = "Inelastic light scattering, Metal-insulator transition, Strongly correlated system",

author = "M. Song and Yang, {In Sang} and Seo, {C. W.} and H. Cheong and Kim, {J. Y.} and Cho, {B. K.}",

note = "Funding Information: ISY and BKC acknowledge the financial support from the 2003 Advanced Basic Research Laboratory (ABRL) program R14-2003-027-01001-0.",

year = "2007",

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doi = "10.1016/j.jmmm.2006.10.221",

language = "English",

volume = "310",

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TY - JOUR

T1 - Local symmetry breaking in Eu1-xLaxB6

AU - Song, M.

AU - Yang, In Sang

AU - Seo, C. W.

AU - Cheong, H.

AU - Kim, J. Y.

AU - Cho, B. K.

N1 - Funding Information: ISY and BKC acknowledge the financial support from the 2003 Advanced Basic Research Laboratory (ABRL) program R14-2003-027-01001-0.

PY - 2007/3

Y1 - 2007/3

N2 - We report inelastic light (Raman) scattering study of Eu1-xLa xB6 (x = 0, 0.05, 0.1, 0.2, 0.3). As La is doped, the T2g mode becomes broad and asymmetric, the Eg mode splits into doublet, and the A1g mode shifts to higher frequencies, while the undoped EuB6 show sharp three phonon peaks, T2g, Eg, and A1g modes. There are around six possible phonon peaks in the Raman spectra of La-doped EuB6. These additional peaks are explained by symmetry lowering of boron octahedra due to tilting/rotating.

AB - We report inelastic light (Raman) scattering study of Eu1-xLa xB6 (x = 0, 0.05, 0.1, 0.2, 0.3). As La is doped, the T2g mode becomes broad and asymmetric, the Eg mode splits into doublet, and the A1g mode shifts to higher frequencies, while the undoped EuB6 show sharp three phonon peaks, T2g, Eg, and A1g modes. There are around six possible phonon peaks in the Raman spectra of La-doped EuB6. These additional peaks are explained by symmetry lowering of boron octahedra due to tilting/rotating.

KW - Inelastic light scattering

KW - Metal-insulator transition

KW - Strongly correlated system

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U2 - 10.1016/j.jmmm.2006.10.221

DO - 10.1016/j.jmmm.2006.10.221

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JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 2 SUPPL. PART 2