Anisotropic spin freezing in the S = 1/2 zigzag chain compound SrCuO2

I. A. Zaliznyak, C. Broholm, M. Kibune, Minoru Nohara, H. Takagi

Research output: Contribution to journalArticle

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Abstract

We characterize an unusual magnetic phase in orthorhombic SrCuO2 using neutron scattering. SrCuO2 contains zigzag spin chains formed by pairs of linear S=1/2 chains (J = 180 meV) coupled through a frustrated interaction (|J′| ≤ 0.1J). For T <Tc1 = 5.0(4) K, an elastic peak develops in a gapless spectrum indicating spin freezing on a time scale δt > 2 ·10-10 s. While the frozen state has long range order along chains (ζc > 200c) and a substantial correlation length, ζa= 60(25)a, perpendicular to zigzag planes, the correlation length is only ζb = 2.2(3)b in the direction of frustrated interactions. We argue that slow dynamics of stripelike cooperative magnetic defects yield this anisotropic frozen state.

Original languageEnglish
Pages (from-to)5370-5373
Number of pages4
JournalPhysical Review Letters
Volume83
Issue number25
Publication statusPublished - Dec 20 1999
Externally publishedYes

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freezing
neutron scattering
interactions
defects

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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Zaliznyak, I. A., Broholm, C., Kibune, M., Nohara, M., & Takagi, H. (1999). Anisotropic spin freezing in the S = 1/2 zigzag chain compound SrCuO2. Physical Review Letters, 83(25), 5370-5373.

Anisotropic spin freezing in the S = 1/2 zigzag chain compound SrCuO2. / Zaliznyak, I. A.; Broholm, C.; Kibune, M.; Nohara, Minoru; Takagi, H.

In: Physical Review Letters, Vol. 83, No. 25, 20.12.1999, p. 5370-5373.

Research output: Contribution to journalArticle

Zaliznyak, IA, Broholm, C, Kibune, M, Nohara, M & Takagi, H 1999, 'Anisotropic spin freezing in the S = 1/2 zigzag chain compound SrCuO2', Physical Review Letters, vol. 83, no. 25, pp. 5370-5373.
Zaliznyak IA, Broholm C, Kibune M, Nohara M, Takagi H. Anisotropic spin freezing in the S = 1/2 zigzag chain compound SrCuO2. Physical Review Letters. 1999 Dec 20;83(25):5370-5373.
Zaliznyak, I. A. ; Broholm, C. ; Kibune, M. ; Nohara, Minoru ; Takagi, H. / Anisotropic spin freezing in the S = 1/2 zigzag chain compound SrCuO2. In: Physical Review Letters. 1999 ; Vol. 83, No. 25. pp. 5370-5373.
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