NMR studies on the internal structure of high-Tc superconductors and other anorganic compounds

K. Kumagai, K. Kakuyanagi, M. Saitoh, Y. Matsuda, M. Hasegawa, S. Takashima, M. Nohara, H. Takagi

Research output: Contribution to journalArticlepeer-review


Spatially-resolved NMR is used to probe internal structures in highly correlated superconductors of optimally-doped Tl2Ba 2CuO6+δ (Tc=85 K) and a heavy fermion superconductor CeCoIn5 (Tc = 2.3 K). The characteristic change of the properties of 205Tl-NMR in the vortex state provides a clear evidence of the antiferromagnetic order in the vortex cores below 20 K in Tl2Ba2CuO6+δ. We also obtain anomalous 115In-NMR spectra of CeCoIn5, which provides a microscopic evidence for the occurrence of a spatially-modulated superconducting order parameter expected in a Fulde-Ferrel-Larkin-Ovchinnkov (FFLO) state.

Original languageEnglish
Pages (from-to)87-93
Number of pages7
JournalHyperfine Interactions
Issue number1-4
Publication statusPublished - Dec 2004
Externally publishedYes


  • Antiferromagnetic order
  • FFLO state
  • NMR
  • Superconductivity
  • Vortex core

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry


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