Phonon density of states in NdFeAsO1-xFx

M. Le Tacon; M. Krisch; A. Bosak; J. -W. G. Bos; S. Margadonna

doi:10.1103/PhysRevB.78.140505

Phonon density of states in NdFeAsO1-xFx

M. Le Tacon, M. Krisch, A. Bosak, J. -W. G. Bos, S. Margadonna

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

36 Citations (Scopus)

Abstract

We report measurements of the phonon density of states in iron oxypnictide superconductors by inelastic x-ray scattering. Good agreement with ab initio calculations that do not take into account strong electronic correlations is found, and an unpredicted softening of phonon branches under F doping of these compounds is observed. Raman-scattering experiments lead us to conclude that this softening is not related to zone-center phonons, and consequently imply an important softening of the relevant phonon branches at finite-momentum transfer Q.

Original language	English
Article number	140505
Pages (from-to)	-
Number of pages	4
Journal	Physical Review B: Condensed Matter and Materials Physics
Volume	78
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevB.78.140505
Publication status	Published - Oct 2008

Access to Document

10.1103/PhysRevB.78.140505

Cite this

@article{6d6a717649684b3da741150fb4f3976e,

title = "Phonon density of states in NdFeAsO1-xFx",

abstract = "We report measurements of the phonon density of states in iron oxypnictide superconductors by inelastic x-ray scattering. Good agreement with ab initio calculations that do not take into account strong electronic correlations is found, and an unpredicted softening of phonon branches under F doping of these compounds is observed. Raman-scattering experiments lead us to conclude that this softening is not related to zone-center phonons, and consequently imply an important softening of the relevant phonon branches at finite-momentum transfer Q.",

author = "{Le Tacon}, M. and M. Krisch and A. Bosak and Bos, {J. -W. G.} and S. Margadonna",

year = "2008",

month = oct,

doi = "10.1103/PhysRevB.78.140505",

language = "English",

volume = "78",

pages = "--",

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

issn = "1098-0121",

publisher = "American Physical Society",

number = "14",

}

TY - JOUR

T1 - Phonon density of states in NdFeAsO1-xFx

AU - Le Tacon, M.

AU - Krisch, M.

AU - Bosak, A.

AU - Bos, J. -W. G.

AU - Margadonna, S.

PY - 2008/10

Y1 - 2008/10

N2 - We report measurements of the phonon density of states in iron oxypnictide superconductors by inelastic x-ray scattering. Good agreement with ab initio calculations that do not take into account strong electronic correlations is found, and an unpredicted softening of phonon branches under F doping of these compounds is observed. Raman-scattering experiments lead us to conclude that this softening is not related to zone-center phonons, and consequently imply an important softening of the relevant phonon branches at finite-momentum transfer Q.

AB - We report measurements of the phonon density of states in iron oxypnictide superconductors by inelastic x-ray scattering. Good agreement with ab initio calculations that do not take into account strong electronic correlations is found, and an unpredicted softening of phonon branches under F doping of these compounds is observed. Raman-scattering experiments lead us to conclude that this softening is not related to zone-center phonons, and consequently imply an important softening of the relevant phonon branches at finite-momentum transfer Q.

U2 - 10.1103/PhysRevB.78.140505

DO - 10.1103/PhysRevB.78.140505

M3 - Article

SN - 1098-0121

VL - 78

SP - -

JO - Physical Review B: Condensed Matter and Materials Physics

JF - Physical Review B: Condensed Matter and Materials Physics

IS - 14

M1 - 140505

ER -

Phonon density of states in NdFeAsO1-xFx

Abstract

Access to Document

Fingerprint

Cite this