75As NMR studies of superconducting Ba0.72K 0.28Fe2As2

Z. Li, K. Matano, D. L. Sun, G. L. Sun, C. T. Lin, M. Ichioka, G. Q. Zheng

Research output: Contribution to journalArticle

Abstract

We have performed 75As nuclear magnetic resonance measurements on a single crystal of the hole-doped superconductor Ba0.72K 0.28Fe2As2 (Tc = 31.5 K). The spin-lattice relaxation rate 1/T1 decreases below Tc with no coherence peak and shows a step-wise variation at low temperatures, which is indicative of multiple superconducting gaps. In the normal state, we find that Fe antiferromagnetic spin fluctuations are anisotropic.

Original languageEnglish
Pages (from-to)S495-S496
JournalPhysica C: Superconductivity and its applications
Volume470
Issue numberSUPPL.1
DOIs
Publication statusPublished - Dec 1 2010

Keywords

  • Anisotropic spin fluctuations
  • BaK FeAs
  • NMR
  • Superconductivity

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of '<sup>75</sup>As NMR studies of superconducting Ba<sub>0.72</sub>K <sub>0.28</sub>Fe<sub>2</sub>As<sub>2</sub>'. Together they form a unique fingerprint.

  • Cite this