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Christianson AD, Lumsden MD, Delaire O, et al. Phonon density of states of LaFeAsO(1-x)Fx. Phys Rev Lett. 2008;101(15):157004doi: 10.1103/PhysRevLett.101.157004.
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., Lucas, M., Kresch, M., Keith, J. B., Fultz, B., Goremychkin, E. A., & McQueeney, R. J. (2008). Phonon density of states of LaFeAsO(1-x)Fx. Physical review letters, 101(15), 157004. https://doi.org/10.1103/PhysRevLett.101.157004
Christianson, A D, et al. "Phonon density of states of LaFeAsO(1-x)Fx." Physical review letters vol. 101,15 (2008): 157004. doi: https://doi.org/10.1103/PhysRevLett.101.157004
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 JY, Lucas M, Kresch M, Keith JB, Fultz B, Goremychkin EA, McQueeney RJ. Phonon density of states of LaFeAsO(1-x)Fx. Phys Rev Lett. 2008 Oct 10;101(15):157004. doi: 10.1103/PhysRevLett.101.157004. Epub 2008 Oct 08. PMID: 18999629.
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Phys Rev Lett. 2008 Oct 10;101(15):157004. doi: 10.1103/PhysRevLett.101.157004. Epub 2008 Oct 08.

Phonon density of states of LaFeAsO(1-x)Fx.

Physical review letters

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

Affiliations

  1. Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.

PMID: 18999629 DOI: 10.1103/PhysRevLett.101.157004

Abstract

We have studied the phonon density of states (PDOS) in LaFeAsO(1-x)Fx 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 approximately 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.

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