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

Research output: Contribution to journalArticle

14 Citations (Scopus)

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.

Original languageEnglish
Article number013707
JournalJournal of the Physical Society of Japan
Volume80
Issue number1
DOIs
Publication statusPublished - 2011 Jan

Fingerprint

phonons
iron
chirp
softening
electro-optics
sampling
life (durability)

Keywords

  • Coherent phonons
  • Femtosecond laser
  • Iron oxypnictide

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Takahashi, H., Kamihara, Y., Koguchi, H., Atou, T., Hosono, H., Katayama, I., ... Nakamura, K. G. (2011). Coherent optical phonons in the iron oxypnictide SmFeAsO 1-xFx (x = 0: 075). Journal of the Physical Society of Japan, 80(1), [013707]. https://doi.org/10.1143/JPSJ.80.013707

Coherent optical phonons in the iron oxypnictide SmFeAsO 1-xFx (x = 0 : 075). / Takahashi, Hiroshi; Kamihara, Yoichi; Koguchi, Hiroaki; Atou, Toshiyuki; Hosono, Hideo; Katayama, Ikufumi; Takeda, Jun; Kitajima, Masahiro; Nakamura, Kazutaka G.

In: Journal of the Physical Society of Japan, Vol. 80, No. 1, 013707, 01.2011.

Research output: Contribution to journalArticle

Takahashi, H, Kamihara, Y, Koguchi, H, Atou, T, Hosono, H, Katayama, I, Takeda, J, Kitajima, M & Nakamura, KG 2011, 'Coherent optical phonons in the iron oxypnictide SmFeAsO 1-xFx (x = 0: 075)', Journal of the Physical Society of Japan, vol. 80, no. 1, 013707. https://doi.org/10.1143/JPSJ.80.013707
Takahashi, Hiroshi ; Kamihara, Yoichi ; Koguchi, Hiroaki ; Atou, Toshiyuki ; Hosono, Hideo ; Katayama, Ikufumi ; Takeda, Jun ; Kitajima, Masahiro ; Nakamura, Kazutaka G. / Coherent optical phonons in the iron oxypnictide SmFeAsO 1-xFx (x = 0 : 075). In: Journal of the Physical Society of Japan. 2011 ; Vol. 80, No. 1.
@article{47c67fda46a24cb7940ae520f3f5b402,
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",
author = "Hiroshi Takahashi and Yoichi Kamihara and Hiroaki Koguchi and Toshiyuki Atou and Hideo Hosono and Ikufumi Katayama and Jun Takeda and Masahiro Kitajima and Nakamura, {Kazutaka G.}",
year = "2011",
month = "1",
doi = "10.1143/JPSJ.80.013707",
language = "English",
volume = "80",
journal = "Journal of the Physical Society of Japan",
issn = "0031-9015",
publisher = "Physical Society of Japan",
number = "1",

}

TY - JOUR

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

T2 - 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

UR - http://www.scopus.com/inward/record.url?scp=78651293206&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=78651293206&partnerID=8YFLogxK

U2 - 10.1143/JPSJ.80.013707

DO - 10.1143/JPSJ.80.013707

M3 - Article

AN - SCOPUS:78651293206

VL - 80

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

SN - 0031-9015

IS - 1

M1 - 013707

ER -