63Cu NMR study on spin ladder compounds Sr14-xCaxCu24O41 (x = 9, 11.5)

K. Magishi, S. Matsumoto, K. Ishida, Y. Kitaoka, K. Asayama, M. Uehara, T. Nagata, J. Akimitsu

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4 Citations (Scopus)

Abstract

63Cu NMR measurements for the ladder sites on single crystals Sr14-xCaxCu24O41 (x = 9, 11.5), which consist of simple chains and 2-leg ladders of Cu2+ ions, have been carried out at f = 125.1 MHz for H ∥ b-axis. From respective measurements of the Knight shift and the nuclear spin-lattice relaxation rate, 1/T1, the spin gap in the ladder has been found to be as large as Δ = 250 K (260 K) and 340 K (360 K) for x = 11.5 (x = 9), respectively.

Original languageEnglish
Pages (from-to)1115-1116
Number of pages2
JournalPhysica C: Superconductivity and its applications
Volume282-287
Issue numberPART 2
DOIs
Publication statusPublished - Aug 1997
Externally publishedYes

ASJC Scopus subject areas

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

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