An Accurate Determination of the Exchange Constant in Sr_2CuO_3 from Recent Theoretical Results

Details An Accurate Determination of the Exchange Constant in Sr_2CuO_3 from Recent Theoretical Results An Accurate Determination of the Exchange Constant in Sr_2CuO_3 from Recent Theoretical Results

1995-08-10

arxiv.org/abs/cond-mat/9508037v2

Phys. Rev. B53 (1996), p. 5116.

Physics

Condensed Matter

revised and reformatted paper with new title to appear in Phys. Rev B (Feb.1996). 3 pages (revtex) with 3 embedded figures (ma

Scientific paper

10.1103/PhysRevB.53.5116

Data from susceptibility measurements on Sr_2CuO_3 are compared with recent theoretical predictions for the magnetic susceptibility of the antiferromagnetic spin-1/2 Heisenberg chain. The experimental data fully confirms the theoretical predictions and in turn we establish that Sr_2CuO_3 behaves almost perfectly like a one-dimensional antiferromagnet with an exchange coupling of J = 1700^{+150}_{-100}K.

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