Spin dynamics of the spin-ladder dimer-chain material Sr14Cu24O41

Roger S. Eccleston, Masatomo Uehara, Jun Akimitsu, Hiroshi Eisaki, Naoki Motoyama, Shin Ichi Uchida

Research output: Contribution to journalArticle

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Abstract

We have performed inelastic neutron scattering on a single crystal sample of Sr14Cu24O41 to study the spin dynamics of the Cu2O3 spin ladder layers and CuO2 chains. Our data are best fitted with a dispersion which has a spin gap of 32.5 ± 0.1 meV and a maximum of 193.5 ± 2.4 meV, consistent with a coupling along the ladders, J = 130 meV and a rung coupling J = 72 meV. Excitations with an energy transfer of approximately 11.5 meV arise from a dimer chain with an antiferromagnetic intradimer coupling J1 = 11.2 meV between next-nearest-neighbor Cu ions, and a ferromagnetic interdimer coupling J2 = -1.1 meV. The dimer chains have a periodicity of five units.

Original languageEnglish
Pages (from-to)1702-1705
Number of pages4
JournalPhysical Review Letters
Volume81
Issue number8
Publication statusPublished - Aug 24 1998
Externally publishedYes

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spin dynamics
ladders
dimers
periodic variations
inelastic scattering
neutron scattering
energy transfer
single crystals
excitation
ions

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Eccleston, R. S., Uehara, M., Akimitsu, J., Eisaki, H., Motoyama, N., & Uchida, S. I. (1998). Spin dynamics of the spin-ladder dimer-chain material Sr14Cu24O41 . Physical Review Letters, 81(8), 1702-1705.

Spin dynamics of the spin-ladder dimer-chain material Sr14Cu24O41 . / Eccleston, Roger S.; Uehara, Masatomo; Akimitsu, Jun; Eisaki, Hiroshi; Motoyama, Naoki; Uchida, Shin Ichi.

In: Physical Review Letters, Vol. 81, No. 8, 24.08.1998, p. 1702-1705.

Research output: Contribution to journalArticle

Eccleston, RS, Uehara, M, Akimitsu, J, Eisaki, H, Motoyama, N & Uchida, SI 1998, 'Spin dynamics of the spin-ladder dimer-chain material Sr14Cu24O41 ', Physical Review Letters, vol. 81, no. 8, pp. 1702-1705.
Eccleston RS, Uehara M, Akimitsu J, Eisaki H, Motoyama N, Uchida SI. Spin dynamics of the spin-ladder dimer-chain material Sr14Cu24O41 . Physical Review Letters. 1998 Aug 24;81(8):1702-1705.
Eccleston, Roger S. ; Uehara, Masatomo ; Akimitsu, Jun ; Eisaki, Hiroshi ; Motoyama, Naoki ; Uchida, Shin Ichi. / Spin dynamics of the spin-ladder dimer-chain material Sr14Cu24O41 . In: Physical Review Letters. 1998 ; Vol. 81, No. 8. pp. 1702-1705.
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AU - Uchida, Shin Ichi

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