|
|||||
|
|
Phonon density of states of LaFeAsO(1-x)Fx |
|
| Authors: | 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 |
| Institution: | Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA. |
| 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. |
| Keywords: | |
| 本文献已被 PubMed 等数据库收录！ | |