Neutron scattering study of Fe(Se1-xTex) 0.92(x = 0.75, 1)

S. Iikubo, M. Fujita, S. Niitaka, H. Takagi, H. Ohtani, M. Hasebe

Research output: Contribution to journalArticlepeer-review


Magnetic fluctuations of Fe(Se1-xTex) 0.92(x = 0.75, 1) are investigated by using neutron scattering technique. Non-superconducting FeTe0.92 shows a pronounced magnetic fluctuation around |Q|≈0.9 Å-1, which is slightly smaller than the magnetic ordering vector |Q|≈0.97-1(Q=(0.5,0,0.5)). On the other hand, superconductor Fe(Se0.25Te0.75)0.92 shows a magnetic fluctuation at |Q|≈1.2 Å-1, which is close to a reciprocal lattice vector Q = (0.5,0.5,0.5) or (0.5,0.5,0), at higher energies. This result suggests that the AF fluctuations characterized by 2D vector Q = (0.5,0.5) may play an important role in superconductivity.

Original languageEnglish
Pages (from-to)S401-S403
JournalPhysica C: Superconductivity and its Applications
Issue numberSUPPL.1
Publication statusPublished - 2010 Dec


  • Fe(SeTe)y
  • Iron-based superconductor
  • Magnetic fluctuation
  • Neutron scattering


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