75As and 139La NMR/NQR investigations of iron-based superconductor LaFeAs(O0.89F0.11)

Y. Nakai, S. Kitagawa, K. Ishida, Y. Kamihara, M. Hirano, H. Hosono

研究成果: Article査読

2 被引用数 (Scopus)

抄録

We report 75As and 139La NMR/NQR results in LaFeAs(O0.89F0.11). In the normal state, 1/T1T decreases with lowered temperature, which is reminiscent of the pseudogap behavior in the high-Tc cuprates. In the superconducting (SC) state, 1/T1 decreases suddenly below Tc without a Hebel-Slichter coherence peak, followed by a T3 dependence, which is characteristics of unconventional superconductors with lines of nodes. However, the residual density of states in the low temperatures, which is usually observed in unconventional superconductors with crystal imperfections and/or impurity phases, was not observed. Knight shift measurements show that spin susceptibility decreases in the SC state.

本文言語English
論文番号052179
ジャーナルJournal of Physics: Conference Series
150
5
DOI
出版ステータスPublished - 2009
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

フィンガープリント

「<sup>75</sup>As and <sup>139</sup>La NMR/NQR investigations of iron-based superconductor LaFeAs(O<sub>0.89</sub>F<sub>0.11</sub>)」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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