Phonon Density of States of LaFeAsO1-xFx
| Title | Phonon Density of States of LaFeAsO1-xFx |
| Publication Type | Journal Article |
| Year of Publication | 2008 |
| Authors | 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 E |
| Journal Title | Physical Review Letters |
| Volume | 101 |
| Pages | 157004 |
| Date Published | 10/01 |
| Type of Article | Article |
| ISBN Number | 0031-9007 |
| Accession Number | ISI:000259965000056 |
| Keywords | 43 k, compound, gaps, lao1-xfxfeas, superconductivity |
| 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 T-c (x similar to 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. |
| DOI | 10.1103/PhysRevLett.101.157004 |
| Alternate Journal | Phys. Rev. Lett. |
