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 journalArticlepeer-review


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
Issue numberSUPPL.1
Publication statusPublished - Dec 2010


  • 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


Dive into the research topics of '75As NMR studies of superconducting Ba0.72K 0.28Fe2As2'. Together they form a unique fingerprint.

Cite this