Coexistence of the spin liquid state and the magnetic ordering in the spin ladder compound; Sr14-xCaxCu24O41

T. Nagata, H. Fujino, K. Ohishi, J. Akimitsu, S. Katano, M. Nishi, K. Kakurai

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

The magnetic ground state in the hole-doped two-leg ladder system Sr2.5Ca11.5Cu24O41 both at ambient pressure and under high pressure up to 3 GPa was investigated by a neutron scattering experiment. The spin gap value for this system at ambient pressure is found to be 32.1 ± 0.3 meV, being almost the same as that of the parent material Sr14Cu24O41. With increasing pressure, the spin gap energy is almost unchanged, however, the inelastic neutron scattering intensity at the zone center of the ladder is decreased progressively. We also observed antiferromagnetic long range ordering below TN(approx. 2.1 K), which was increased with increasing pressure. A possible magnetic structure of this system is also discussed. These results show the coexistence of the spin liquid state and antiferromagnetic ordering in the hole-doped two-leg ladder system.

Original languageEnglish
Pages (from-to)1039-1043
Number of pages5
JournalJournal of Physics and Chemistry of Solids
Volume60
Issue number8
DOIs
Publication statusPublished - Jan 1 1999
Externally publishedYes
EventProceedings of the 1998 7th ISSP International Symposium Frontiers in Neutron Scattering Research (ISSP7) - Tokyo, Jpn
Duration: Nov 24 1998Nov 27 1998

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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