Journal
PHYSICAL REVIEW B
Volume 79, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.79.014519
Keywords
iron compounds; neutron diffraction; phonons; superconducting transition temperature
Funding
- National Science Foundation [DMR-0454672]
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Inelastic neutron-scattering experiments have been carried out on polycrystalline samples of the FeSe1-x superconductors. We report the phonon density of states for FeSe1-x with T-c approximate to 8 K. The phonon cutoff frequency is observed around 40 meV. No significant change is observed across the superconducting transition. The measurements support the published first-principles calculations [A. Subedi , Phys. Rev. B 78, 134514 (2008)].
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