非表示:
キーワード:
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要旨:
Although pairing mechanism in unconventional superconductors is still an
open question, the density of states at the Fermi level is considered to
be one of the factors affecting the superconducting transition
temperature. Herein, we report on Fe-57-Mossbauer studies of beta-FeSe,
FeSe Te-0.5 (0.5), and Rb Fe-0.8 Se-1.6 (2) superconductors as well as
two intercalate products consisting of FeSe layers and a
lithium-containing molecular spacer in between. In these materials, the
hyperfine parameters of Fe-57 are directly related to the 3d-electron
density on Fe atoms and show strong correlation with superconducting
properties.
