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

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


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.

Original languageEnglish
Article number052179
JournalJournal of Physics: Conference Series
Issue number5
Publication statusPublished - 2009
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


Dive into the research topics of '75As and 139La NMR/NQR investigations of iron-based superconductor LaFeAs(O0.89F0.11)'. Together they form a unique fingerprint.

Cite this