| Literature DB >> 18999629 |
A D Christianson1, 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.
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.Entities:
Year: 2008 PMID： 18999629 DOI： 10.1103/PhysRevLett.101.157004
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161