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
CNRS

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

Résumé

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.

langue originale	Anglais
Numéro d'article	172504
journal	Physical Review B - Condensed Matter and Materials Physics
Volume	80
Numéro de publication	17
Les DOIs	https://doi.org/10.1103/PhysRevB.80.172504
état	Publié - 16 nov. 2009

Accès au document

10.1103/PhysRevB.80.172504

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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.",

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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.

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DO - 10.1103/PhysRevB.80.172504

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JO - Physical Review B - Condensed Matter and Materials Physics

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