Phonon density of states of LaFeAsO(1-x)Fx.
نویسندگان
چکیده
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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ورودعنوان ژورنال:
- Physical review letters
دوره 101 15 شماره
صفحات -
تاریخ انتشار 2008