Neutron scattering measurements of the phonon density of states of FeSe1−x superconductors

D. Phelan; J. N. Millican; E. L. Thomas; J. B. Leão; Y. Qiu; R. Paul

doi:10.1103/PhysRevB.79.014519

← Back to search

Neutron scattering measurements of the phonon density of states of FeSe1−x superconductors

D. Phelan, J. N. Millican, E. L. Thomas, J. B. Leão, Y. Qiu, R. Paul

DOI 10.1103/PhysRevB.79.014519 · Physical Review B

T1

Active bibliographic source — not scientific approval

Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.

Abstract

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 Tc≈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 et al., Phys. Rev. B 78, 134514 (2008)].

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
FeSe1-x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	8	Pressure unresolved	unknown
Fe(Se0.5Te0.5)1-x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	15	Pressure unresolved	unknown
FeSe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	27	1.48 GPa	unknown