サイエンス記事
鉄系超伝導体のスピン揺動
キーワード:
Iron-based superconductors,
polarized inelastic neutron scattering,
spin fluctuation,
spin resonance
2014 年 24 巻 3 号 p. 182-185
詳細
2014 年 24 巻 3 号 p. 182-185
Spin fluctuations of iron-based superconductors are studied using unpolarized and polarized inelastic neutron scattering technique. Remarkable enhancement of magnetic signal at a specific energy is observed in superconducting phase, which is so called spin resonance. The spin resonance exhibits c-axis and spin-space anisotropy. The anisotropy could be attributed to three-dimensional antiferromagnetic correlations suggesting a strong relationship between the magnetism and superconductivity.
