Structure and Raman scattering of Cs3C60 under high pressure

S. Fujiki; Y. Kubozono; S. Emura; Y. Takabayashi; S. Kashino; A. Fujiwara; K. Ishii; H. Suematsu; Y. Murakami; Y. Iwasa; T. Mitani; H. Ogata

doi:10.1103/PhysRevB.62.5366

Structure and Raman scattering of Cs₃C₆₀ under high pressure

S. Fujiki, Y. Kubozono, S. Emura, Y. Takabayashi, S. Kashino, A. Fujiwara, K. Ishii, H. Suematsu, Y. Murakami, Y. Iwasa, T. Mitani, H. Ogata

Research Institute for Interdisciplinary Science

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

13 Citations (Scopus)

Abstract

Raman scattering is studied for a pressure-induced superconductor Cs₃C₆₀ in a pressure region from 1 bar to 62 kbar. The center frequency ω₀ for H_g(1) and H_g(2) Raman peaks increase by applying pressure, but the increase shows a saturation in the high-pressure region. On the other hand, the ω₀ for A_g(1) and A_g(2) modes increase monotonically in all pressure regions. The electron-phonon coupling constant for Cs₃C₆₀ shows a rapid decrease up to 30 kbar and an increase above 30 kbar. This result may be associated with a transformation from a multiphase (body-centered orthorhombic and A 15 phases) to a single phase around 20 kbar. X-ray powder diffraction pattern at 11 K under a pressure of 40 kbar shows that a superconducting phase for Cs₃C₆₀ is body-centered orthorhombic.

Original language	English
Pages (from-to)	5366-5369
Number of pages	4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	62
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevB.62.5366
Publication status	Published - Sep 1 2000

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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Structure and Raman scattering of Cs₃C₆₀ under high pressure. / Fujiki, S.; Kubozono, Y.; Emura, S.; Takabayashi, Y.; Kashino, S.; Fujiwara, A.; Ishii, K.; Suematsu, H.; Murakami, Y.; Iwasa, Y.; Mitani, T.; Ogata, H.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 62, No. 9, 01.09.2000, p. 5366-5369.

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

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title = "Structure and Raman scattering of Cs3C60 under high pressure",

abstract = "Raman scattering is studied for a pressure-induced superconductor Cs3C60 in a pressure region from 1 bar to 62 kbar. The center frequency ω0 for Hg(1) and Hg(2) Raman peaks increase by applying pressure, but the increase shows a saturation in the high-pressure region. On the other hand, the ω0 for Ag(1) and Ag(2) modes increase monotonically in all pressure regions. The electron-phonon coupling constant for Cs3C60 shows a rapid decrease up to 30 kbar and an increase above 30 kbar. This result may be associated with a transformation from a multiphase (body-centered orthorhombic and A 15 phases) to a single phase around 20 kbar. X-ray powder diffraction pattern at 11 K under a pressure of 40 kbar shows that a superconducting phase for Cs3C60 is body-centered orthorhombic.",

author = "S. Fujiki and Y. Kubozono and S. Emura and Y. Takabayashi and S. Kashino and A. Fujiwara and K. Ishii and H. Suematsu and Y. Murakami and Y. Iwasa and T. Mitani and H. Ogata",

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AU - Fujiki, S.

AU - Kubozono, Y.

AU - Emura, S.

AU - Takabayashi, Y.

AU - Kashino, S.

AU - Fujiwara, A.

AU - Ishii, K.

AU - Suematsu, H.

AU - Murakami, Y.

AU - Iwasa, Y.

AU - Mitani, T.

AU - Ogata, H.

PY - 2000/9/1

Y1 - 2000/9/1

N2 - Raman scattering is studied for a pressure-induced superconductor Cs3C60 in a pressure region from 1 bar to 62 kbar. The center frequency ω0 for Hg(1) and Hg(2) Raman peaks increase by applying pressure, but the increase shows a saturation in the high-pressure region. On the other hand, the ω0 for Ag(1) and Ag(2) modes increase monotonically in all pressure regions. The electron-phonon coupling constant for Cs3C60 shows a rapid decrease up to 30 kbar and an increase above 30 kbar. This result may be associated with a transformation from a multiphase (body-centered orthorhombic and A 15 phases) to a single phase around 20 kbar. X-ray powder diffraction pattern at 11 K under a pressure of 40 kbar shows that a superconducting phase for Cs3C60 is body-centered orthorhombic.

AB - Raman scattering is studied for a pressure-induced superconductor Cs3C60 in a pressure region from 1 bar to 62 kbar. The center frequency ω0 for Hg(1) and Hg(2) Raman peaks increase by applying pressure, but the increase shows a saturation in the high-pressure region. On the other hand, the ω0 for Ag(1) and Ag(2) modes increase monotonically in all pressure regions. The electron-phonon coupling constant for Cs3C60 shows a rapid decrease up to 30 kbar and an increase above 30 kbar. This result may be associated with a transformation from a multiphase (body-centered orthorhombic and A 15 phases) to a single phase around 20 kbar. X-ray powder diffraction pattern at 11 K under a pressure of 40 kbar shows that a superconducting phase for Cs3C60 is body-centered orthorhombic.

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