Synchrotron X-ray study of lattice vibrations in CdCr2O 4

Jung Hwa Kim; Masa Matsuda; Hiroaki Ueda; Yutaka Ueda; Jae Ho Chung; Satoshi Tsutsui; Alfred Q.R. Baron; Seung Hun Lee

doi:10.1143/JPSJ.80.073603

Synchrotron X-ray study of lattice vibrations in CdCr₂O ₄

Jung Hwa Kim, Masa Matsuda, Hiroaki Ueda, Yutaka Ueda, Jae Ho Chung, Satoshi Tsutsui, Alfred Q.R. Baron, Seung Hun Lee

Department of Physics

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

5 Citations (Scopus)

Abstract

Using inelastic x-ray scattering we have investigated lattice vibrations in a geometric frustrated system CdCr₂O₄ that upon cooling undergoes a spin-Peierls phase transition at TN = 7:8K from a cubic and paramagnetic to a tetragonal and Nee'l state. Phonon modes measured around Brillouin zone boundaries show energy shifts when the transition occurs. Our analysis shows that the shifting can be understood as the ordinary effects of the lowering of the crystal symmetry.

Original language	English
Article number	073603
Journal	Journal of the Physical Society of Japan
Volume	80
Issue number	7
DOIs	https://doi.org/10.1143/JPSJ.80.073603
Publication status	Published - 2011 Jul

Keywords

A spin-Peierls phase transition
Frustrated system CdCrO
Phonon dispersions
Spin-lattice coupling
Synchrotron inelastic x-ray scattering

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.80.073603

Cite this

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title = "Synchrotron X-ray study of lattice vibrations in CdCr2O 4",

abstract = "Using inelastic x-ray scattering we have investigated lattice vibrations in a geometric frustrated system CdCr2O4 that upon cooling undergoes a spin-Peierls phase transition at TN = 7:8K from a cubic and paramagnetic to a tetragonal and Nee'l state. Phonon modes measured around Brillouin zone boundaries show energy shifts when the transition occurs. Our analysis shows that the shifting can be understood as the ordinary effects of the lowering of the crystal symmetry.",

keywords = "A spin-Peierls phase transition, Frustrated system CdCrO, Phonon dispersions, Spin-lattice coupling, Synchrotron inelastic x-ray scattering",

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T1 - Synchrotron X-ray study of lattice vibrations in CdCr2O 4

AU - Kim, Jung Hwa

AU - Matsuda, Masa

AU - Ueda, Hiroaki

AU - Ueda, Yutaka

AU - Chung, Jae Ho

AU - Tsutsui, Satoshi

AU - Baron, Alfred Q.R.

AU - Lee, Seung Hun

PY - 2011/7

Y1 - 2011/7

N2 - Using inelastic x-ray scattering we have investigated lattice vibrations in a geometric frustrated system CdCr2O4 that upon cooling undergoes a spin-Peierls phase transition at TN = 7:8K from a cubic and paramagnetic to a tetragonal and Nee'l state. Phonon modes measured around Brillouin zone boundaries show energy shifts when the transition occurs. Our analysis shows that the shifting can be understood as the ordinary effects of the lowering of the crystal symmetry.

AB - Using inelastic x-ray scattering we have investigated lattice vibrations in a geometric frustrated system CdCr2O4 that upon cooling undergoes a spin-Peierls phase transition at TN = 7:8K from a cubic and paramagnetic to a tetragonal and Nee'l state. Phonon modes measured around Brillouin zone boundaries show energy shifts when the transition occurs. Our analysis shows that the shifting can be understood as the ordinary effects of the lowering of the crystal symmetry.

KW - A spin-Peierls phase transition

KW - Frustrated system CdCrO

KW - Phonon dispersions

KW - Spin-lattice coupling

KW - Synchrotron inelastic x-ray scattering

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DO - 10.1143/JPSJ.80.073603

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VL - 80

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

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