Inelastic Neutron-Scattering Measurements of Incommensurate Magnetic Excitations<? format?> on Superconducting LiFeAs Single Crystals
N Qureshi, P Steffens, Y Drees, AC Komarek… - Physical review …, 2012 - APS
N Qureshi, P Steffens, Y Drees, AC Komarek, D Lamago, Y Sidis, L Harnagea, HJ Grafe…
Physical review letters, 2012•APSMagnetic correlations in superconducting LiFeAs were studied by elastic and by inelastic
neutron-scattering experiments. There is no indication for static magnetic ordering, but
inelastic correlations appear at the incommensurate wave vector (0.5±δ, 0.5∓ δ, 0) with δ∼
0.07 slightly shifted from the commensurate ordering observed in other FeAs-based
compounds. The incommensurate magnetic excitations respond to the opening of the
superconducting gap by a transfer of spectral weight.
neutron-scattering experiments. There is no indication for static magnetic ordering, but
inelastic correlations appear at the incommensurate wave vector (0.5±δ, 0.5∓ δ, 0) with δ∼
0.07 slightly shifted from the commensurate ordering observed in other FeAs-based
compounds. The incommensurate magnetic excitations respond to the opening of the
superconducting gap by a transfer of spectral weight.
Magnetic correlations in superconducting LiFeAs were studied by elastic and by inelastic neutron-scattering experiments. There is no indication for static magnetic ordering, but inelastic correlations appear at the incommensurate wave vector () with slightly shifted from the commensurate ordering observed in other FeAs-based compounds. The incommensurate magnetic excitations respond to the opening of the superconducting gap by a transfer of spectral weight.
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