Phonon density of states of LaFeAsO1-xFx

A. D. Christianson; M. D. Lumsden; O. Delaire; M. B. Stone; D. L. Abernathy; M. A. McGuire; A. S. Sefat; R. Jin; B. C. Sales; D. Mandrus; E. D. Mun; P. C. Canfield; J. Y.Y. Lin; M. Lucas; M. Kresch; J. B. Keith; B. Fultz; E. A. Goremychkin; R. J. McQueeney

doi:10.1103/PhysRevLett.101.157004

Phonon density of states of LaFeAsO1-xFx

A. D. Christianson
, M. D. Lumsden
, O. Delaire
, M. B. Stone
, D. L. Abernathy
, M. A. McGuire
, A. S. Sefat
, R. Jin
, B. C. Sales
, D. Mandrus
, E. D. Mun
, P. C. Canfield
, J. Y.Y. Lin
, M. Lucas
, M. Kresch
, J. B. Keith
, B. Fultz
, E. A. Goremychkin
, R. J. McQueeney

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

62 Scopus citations

Abstract

We have studied the phonon density of states (PDOS) in LaFeAsO1-xFx with inelastic neutron scattering methods. The PDOS of the parent compound (x=0) is very similar to the PDOS of samples optimally doped with fluorine to achieve the maximum Tc (x∼0.1). Good agreement is found between the experimental PDOS and first-principles calculations with the exception of a small difference in Fe mode frequencies. The PDOS reported here is not consistent with conventional electron-phonon mediated superconductivity.

Original language	English
Article number	157004
Journal	Physical Review Letters
Volume	101
Issue number	15
DOIs	https://doi.org/10.1103/PhysRevLett.101.157004
State	Published - Oct 8 2008

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10.1103/PhysRevLett.101.157004

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Christianson, A. D., Lumsden, M. D., Delaire, O., Stone, M. B., Abernathy, D. L., McGuire, M. A., Sefat, A. S., Jin, R., Sales, B. C., Mandrus, D., Mun, E. D., Canfield, P. C., Lin, J. Y. Y., Lucas, M., Kresch, M., Keith, J. B., Fultz, B., Goremychkin, E. A., & McQueeney, R. J. (2008). Phonon density of states of LaFeAsO1-xFx. Physical Review Letters, 101(15), Article 157004. https://doi.org/10.1103/PhysRevLett.101.157004

@article{e9cc5652e1064943a9a964af0fc6cfd1,

title = "Phonon density of states of LaFeAsO1-xFx",

abstract = "We have studied the phonon density of states (PDOS) in LaFeAsO1-xFx with inelastic neutron scattering methods. The PDOS of the parent compound (x=0) is very similar to the PDOS of samples optimally doped with fluorine to achieve the maximum Tc (x∼0.1). Good agreement is found between the experimental PDOS and first-principles calculations with the exception of a small difference in Fe mode frequencies. The PDOS reported here is not consistent with conventional electron-phonon mediated superconductivity.",

author = "Christianson, \{A. D.\} and Lumsden, \{M. D.\} and O. Delaire and Stone, \{M. B.\} and Abernathy, \{D. L.\} and McGuire, \{M. A.\} and Sefat, \{A. S.\} and R. Jin and Sales, \{B. C.\} and D. Mandrus and Mun, \{E. D.\} and Canfield, \{P. C.\} and Lin, \{J. Y.Y.\} and M. Lucas and M. Kresch and Keith, \{J. B.\} and B. Fultz and Goremychkin, \{E. A.\} and McQueeney, \{R. J.\}",

year = "2008",

month = oct,

day = "8",

doi = "10.1103/PhysRevLett.101.157004",

language = "English",

volume = "101",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "15",

}

Christianson, AD , Lumsden, MD, Delaire, O, Stone, MB , Abernathy, DL , McGuire, MA, Sefat, AS, Jin, R, Sales, BC, Mandrus, D, Mun, ED, Canfield, PC, Lin, JYY, Lucas, M, Kresch, M, Keith, JB, Fultz, B, Goremychkin, EA & McQueeney, RJ 2008, 'Phonon density of states of LaFeAsO1-xFx', Physical Review Letters, vol. 101, no. 15, 157004. https://doi.org/10.1103/PhysRevLett.101.157004

TY - JOUR

T1 - Phonon density of states of LaFeAsO1-xFx

AU - Christianson, A. D.

AU - Lumsden, M. D.

AU - Delaire, O.

AU - Stone, M. B.

AU - Abernathy, D. L.

AU - McGuire, M. A.

AU - Sefat, A. S.

AU - Jin, R.

AU - Sales, B. C.

AU - Mandrus, D.

AU - Mun, E. D.

AU - Canfield, P. C.

AU - Lin, J. Y.Y.

AU - Lucas, M.

AU - Kresch, M.

AU - Keith, J. B.

AU - Fultz, B.

AU - Goremychkin, E. A.

AU - McQueeney, R. J.

PY - 2008/10/8

Y1 - 2008/10/8

N2 - We have studied the phonon density of states (PDOS) in LaFeAsO1-xFx with inelastic neutron scattering methods. The PDOS of the parent compound (x=0) is very similar to the PDOS of samples optimally doped with fluorine to achieve the maximum Tc (x∼0.1). Good agreement is found between the experimental PDOS and first-principles calculations with the exception of a small difference in Fe mode frequencies. The PDOS reported here is not consistent with conventional electron-phonon mediated superconductivity.

AB - We have studied the phonon density of states (PDOS) in LaFeAsO1-xFx with inelastic neutron scattering methods. The PDOS of the parent compound (x=0) is very similar to the PDOS of samples optimally doped with fluorine to achieve the maximum Tc (x∼0.1). Good agreement is found between the experimental PDOS and first-principles calculations with the exception of a small difference in Fe mode frequencies. The PDOS reported here is not consistent with conventional electron-phonon mediated superconductivity.

UR - https://www.scopus.com/pages/publications/54049157420

U2 - 10.1103/PhysRevLett.101.157004

DO - 10.1103/PhysRevLett.101.157004

M3 - Article

AN - SCOPUS:54049157420

SN - 0031-9007

VL - 101

JO - Physical Review Letters

JF - Physical Review Letters

IS - 15

M1 - 157004

ER -

Phonon density of states of LaFeAsO1-xFx

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