Hole-induced novel spin state within haldane gap in Nd2-xCa xBaNiO5

Tomoyuki Sasaki, Tetsuya Yokoo, Susumu Katano, Jun Akimitsu

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Static and dynamical spin properties in a hole-doped one-dimensional Haldane chain system have been investigated by magnetization and neutron scattering measurements on antiferromagnetic Nd2-xCa xBaNiO5. Spin-glass-like weak ferromagnetic behavior and an incommensurate dynamical structure were observed, which are similar to those reported in the Haldane system Y2-xCaxBaNiO5. A novel excitation, moreover, has been revealed at 10 meV because of complete the shift in the Haldane gap due to three-dimensional antiferromagnetic ordering, which possibly provides a total picture of a hole-induced quantum Haldane chain.

Original languageEnglish
Pages (from-to)267-270
Number of pages4
Journaljournal of the physical society of japan
Issue number1
Publication statusPublished - Jan 2005
Externally publishedYes


  • Haldane gap
  • Heisenberg chain
  • Inelastic neutron scattering
  • Magnetic excitation

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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