Coherent optical phonons in the iron oxypnictide SmFeAsO 1-xFx (x = 0:075)

Hiroshi Takahashi; Yoichi Kamihara; Hiroaki Koguchi; Toshiyuki Atou; Hideo Hosono; Ikufumi Katayama; Jun Takeda; Masahiro Kitajima; Kazutaka G. Nakamura

doi:10.1143/JPSJ.80.013707

Coherent optical phonons in the iron oxypnictide SmFeAsO _1-xF_x (x = 0:075)

Hiroshi Takahashi, Yoichi Kamihara, Hiroaki Koguchi, Toshiyuki Atou, Hideo Hosono, Ikufumi Katayama, Jun Takeda, Masahiro Kitajima, Kazutaka G. Nakamura

物理情報工学科

研究成果: Article › 査読

15 被引用数 (Scopus)

抄録

Coherent optical phonons with the Fe-related mode B_1g(Fe) in the iron oxypnictide SmFeAsO_1-xF_x (x - 0:075) are observed using femtosecond time-resolved reflection measurements with electrooptic sampling, in addition to the A_1g(Sm) and A_1g(As) modes. The time evolution of the frequency and amplitude of optical phonons is studied and the lifetimes of phonons are estimated. The frequency softening and positive frequency chirp related to the strong carrierphonon coupling are found for the A_1g(Sm) mode.

本文言語	English
論文番号	013707
ジャーナル	Journal of the Physical Society of Japan
巻	80
号	1
DOI	https://doi.org/10.1143/JPSJ.80.013707
出版ステータス	Published - 2011 1月

ASJC Scopus subject areas

物理学および天文学一般

文献へのアクセス

10.1143/JPSJ.80.013707

他のファイルとリンク

引用スタイル

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title = "Coherent optical phonons in the iron oxypnictide SmFeAsO 1-xFx (x = 0:075)",

abstract = "Coherent optical phonons with the Fe-related mode B1g(Fe) in the iron oxypnictide SmFeAsO1-xFx (x - 0:075) are observed using femtosecond time-resolved reflection measurements with electrooptic sampling, in addition to the A1g(Sm) and A1g(As) modes. The time evolution of the frequency and amplitude of optical phonons is studied and the lifetimes of phonons are estimated. The frequency softening and positive frequency chirp related to the strong carrierphonon coupling are found for the A1g(Sm) mode.",

keywords = "Coherent phonons, Femtosecond laser, Iron oxypnictide",

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T1 - Coherent optical phonons in the iron oxypnictide SmFeAsO 1-xFx (x = 0:075)

AU - Takahashi, Hiroshi

AU - Kamihara, Yoichi

AU - Koguchi, Hiroaki

AU - Atou, Toshiyuki

AU - Hosono, Hideo

AU - Katayama, Ikufumi

AU - Takeda, Jun

AU - Kitajima, Masahiro

AU - Nakamura, Kazutaka G.

PY - 2011/1

Y1 - 2011/1

N2 - Coherent optical phonons with the Fe-related mode B1g(Fe) in the iron oxypnictide SmFeAsO1-xFx (x - 0:075) are observed using femtosecond time-resolved reflection measurements with electrooptic sampling, in addition to the A1g(Sm) and A1g(As) modes. The time evolution of the frequency and amplitude of optical phonons is studied and the lifetimes of phonons are estimated. The frequency softening and positive frequency chirp related to the strong carrierphonon coupling are found for the A1g(Sm) mode.

AB - Coherent optical phonons with the Fe-related mode B1g(Fe) in the iron oxypnictide SmFeAsO1-xFx (x - 0:075) are observed using femtosecond time-resolved reflection measurements with electrooptic sampling, in addition to the A1g(Sm) and A1g(As) modes. The time evolution of the frequency and amplitude of optical phonons is studied and the lifetimes of phonons are estimated. The frequency softening and positive frequency chirp related to the strong carrierphonon coupling are found for the A1g(Sm) mode.

KW - Coherent phonons

KW - Femtosecond laser

KW - Iron oxypnictide

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