Abstract
The description of the numerical method of simulation based on the quantum transfer-matrix (QTM) approach is presented for diluted spin \(S=1/2\) chains. Modification of the extrapolation technique has been used to obtain better accuracy of numerical results. The simulations have been performed using the \(S=1/2\) antiferromagnetic Heisenberg model with the transverse staggered field and a uniform magnetic field perpendicular to the staggered field applicable for the diluted compound (Yb\(_{1-x}\)Lu\(_x\))\(_4\)As\(_3\). In the model calculations the fixed microscopic parameters established earlier for the pure system have been assumed and the random impurity distribution has been considered. The experimental field-dependent specific heat of the polydomain diluted (Yb\(_{1-x}\)Lu\(_x\))\(_4\)As\(_3\) sample is compared with that calculated using the HPC resources and providing additional verification of both the QTM method and the physical model.
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We thank for an access to the HPC resources in PSNC Poznań (Poland).
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Matysiak, R., Gegenwart, P., Ochiai, A., Steglich, F. (2018). Application of Numerical Quantum Transfer-Matrix Approach in the Randomly Diluted Quantum Spin Chains. In: Wyrzykowski, R., Dongarra, J., Deelman, E., Karczewski, K. (eds) Parallel Processing and Applied Mathematics. PPAM 2017. Lecture Notes in Computer Science(), vol 10778. Springer, Cham. https://doi.org/10.1007/978-3-319-78054-2_34
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