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  1. 1 Acta Physica Polonica A

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  1. 1 2000

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  1. 1 Bieliński M.

  2. 1 Renard J.

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Susceptibility Behaviour of CuGeO_{3}: Comparison between Experiment and the Quantum Transfer Matrix Approach

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Bieliński M., Renard J.
Acta Physica Polonica A
|
2000
|
vol. 97
|
issue 5
851-854
EN
Thermodynamical properties of one-dimensional S=1/2 Heisenberg model with dimerized nearest- and uniform next-nearest-neighbour interactions are studied by the numerically exact quantum transfer matrix method and the results are applied to CuGeO_{3}. Suzuki-Trotter formula is used to obtain a classical system with spin σ=3/2 and effective interactions between nearest-neigbours only. Magnetic susceptibility curve is calculated and compared with new experimental results performed in a wide temperature range, revealing the presence of frustration in the model proposed for CuGeO_{3}.
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