Observation of a coherent optical phonon in the iron pnictide superconductor Ba (Fe1-x Cox)2 As2 (x=0.06 and 0.08)

B. Mansart; D. Boschetto; A. Savoia; F. Rullier-Albenque; A. Forget; D. Colson; A. Rousse; M. Marsi

doi:10.1103/PhysRevB.80.172504

Observation of a coherent optical phonon in the iron pnictide superconductor Ba (Fe_1-x Co_x)₂ As₂ (x=0.06 and 0.08)

B. Mansart
, D. Boschetto
, A. Savoia
, F. Rullier-Albenque
, A. Forget
, D. Colson
, A. Rousse
, M. Marsi

Laboratoire de Physique des Solides
Laboratory d'Optique Appliquée, ENSTA, CNRS-École Polytechnique
Centre national de la recherche scientifique

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

Abstract

We report the observation of a coherent lattice oscillation in a pnictide superconductor. A coherent fully symmetric optical phonon was detected in Ba (Fe_1-x Co_x)₂ As₂ (x=0.06 and x=0.08) using time-resolved pump-probe reflectivity with 40 fs time resolution. The analysis of the phonon parameters for various excitation fluences reveals no evident difference below and above the critical temperature, suggesting that the A1g mode is not involved in the superconducting phase transition.

Original language	English
Article number	172504
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	80
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevB.80.172504
Publication status	Published - 16 Nov 2009

Access to Document

10.1103/PhysRevB.80.172504

Cite this

@article{11dedb9875b143e88b42e58edc695aea,

title = "Observation of a coherent optical phonon in the iron pnictide superconductor Ba (Fe1-x Cox)2 As2 (x=0.06 and 0.08)",

abstract = "We report the observation of a coherent lattice oscillation in a pnictide superconductor. A coherent fully symmetric optical phonon was detected in Ba (Fe1-x Cox)2 As2 (x=0.06 and x=0.08) using time-resolved pump-probe reflectivity with 40 fs time resolution. The analysis of the phonon parameters for various excitation fluences reveals no evident difference below and above the critical temperature, suggesting that the A1g mode is not involved in the superconducting phase transition.",

author = "B. Mansart and D. Boschetto and A. Savoia and F. Rullier-Albenque and A. Forget and D. Colson and A. Rousse and M. Marsi",

year = "2009",

month = nov,

day = "16",

doi = "10.1103/PhysRevB.80.172504",

language = "English",

volume = "80",

journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "1098-0121",

number = "17",

}

TY - JOUR

T1 - Observation of a coherent optical phonon in the iron pnictide superconductor Ba (Fe1-x Cox)2 As2 (x=0.06 and 0.08)

AU - Mansart, B.

AU - Boschetto, D.

AU - Savoia, A.

AU - Rullier-Albenque, F.

AU - Forget, A.

AU - Colson, D.

AU - Rousse, A.

AU - Marsi, M.

PY - 2009/11/16

Y1 - 2009/11/16

N2 - We report the observation of a coherent lattice oscillation in a pnictide superconductor. A coherent fully symmetric optical phonon was detected in Ba (Fe1-x Cox)2 As2 (x=0.06 and x=0.08) using time-resolved pump-probe reflectivity with 40 fs time resolution. The analysis of the phonon parameters for various excitation fluences reveals no evident difference below and above the critical temperature, suggesting that the A1g mode is not involved in the superconducting phase transition.

AB - We report the observation of a coherent lattice oscillation in a pnictide superconductor. A coherent fully symmetric optical phonon was detected in Ba (Fe1-x Cox)2 As2 (x=0.06 and x=0.08) using time-resolved pump-probe reflectivity with 40 fs time resolution. The analysis of the phonon parameters for various excitation fluences reveals no evident difference below and above the critical temperature, suggesting that the A1g mode is not involved in the superconducting phase transition.

U2 - 10.1103/PhysRevB.80.172504

DO - 10.1103/PhysRevB.80.172504

M3 - Article

AN - SCOPUS:72849107458

SN - 1098-0121

VL - 80

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 17

M1 - 172504

ER -

Observation of a coherent optical phonon in the iron pnictide superconductor Ba (Fe1-x Cox)2 As2 (x=0.06 and 0.08)

Abstract

Access to Document

Fingerprint

Cite this

Observation of a coherent optical phonon in the iron pnictide superconductor Ba (Fe_1-x Co_x)₂ As₂ (x=0.06 and 0.08)