Cu NMR/NQR studies on magnetism in impurity/hole-doped spin-ladder compounds

Shigeki Ohsugi, Yoshio Kitaoka, Masaki Azuma, Yoshie Fujishiro, Mikio Takano, Takashi Nagata, Hirokazu Fujino, Jun Akimitsu

Research output: Contribution to journalArticle

Abstract

Cu nuclear magnetic resonance (NMR) spectra of impurities (Zn, Ni, and La)-doped spin-1/2 Heisenberg ladder compounds SrCu2O3 (Sr123) are broadened with Curie-like temperature (T) dependence. The spectra have been successfully fit by using a quasi-one-dimensional (Q1D) staggered polarization (SP) model. Such a SP has also revealed in Cu NMR measurements of Sr14 - xCaxCu24O41 (Cax) with hole-doped ladders. The origin of possible 3D antiferromagnetic (AF) long-range ordering in (Zn and Ni)-doped Sr123 and Cax around x = 12 at low T is considered to be similar. Once unpaired spins S0's are induced and 3D interlayer interaction occurs, the localized spins couple in the whole system.

Original languageEnglish
Pages (from-to)157-162
Number of pages6
JournalHyperfine Interactions
Volume133
Issue number1-4
DOIs
Publication statusPublished - Nov 26 2001
Externally publishedYes

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Keywords

  • Cu NMR/NQR
  • Magnetic ordering
  • Spin ladder

ASJC Scopus subject areas

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

Cite this

Ohsugi, S., Kitaoka, Y., Azuma, M., Fujishiro, Y., Takano, M., Nagata, T., Fujino, H., & Akimitsu, J. (2001). Cu NMR/NQR studies on magnetism in impurity/hole-doped spin-ladder compounds. Hyperfine Interactions, 133(1-4), 157-162. https://doi.org/10.1023/A:1012200305404