Magnetic Susceptibility of Sr_{2}CuO_{3} and SrCu_{2}O_{3}

• Authors: D.C. Johnston
• Languages of publication: EN

Abstracts

EN

The observed magnetic susceptibility χ^{obs}(T) data of Ami et al. for the linear-chain cuprate Sr_{2}CuO_{3} are re-analyzed in terms of recent theory of Eggert et al. for the spin susceptibility χ(T) of the spin S=1/2 linear-chain Heisenberg antiferromagnet, which yielded the Cu-Cu exchange constant J/k_{B}=2150 K. Values for J', the exchange constant in the rungs, and J, that in the legs, were estimated for the S=1/2 two-leg ladder compound SrCu_{2}O_{3}, using the χ(T) data of Azuma et al. The analyses suggest that J'/J ≈ 0.5, contrary to the expectation that J'/J ≈ 1, and that J/k_{B} is very large ( ≈ 2000 K), similar to that in Sr_{2}CuO_{3}.

Keywords

EN

74.72.Jt; 74.25.Ha; 75.40.Cx

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1997
• Volume: 91
• Issue: 1
• Pages: 181-189

Dates

published

1997-01

Contributors

author

D.C. Johnston

• Ames Laboratory-USDOE and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA