Anzeige
Erschienen in:
2018 | OriginalPaper | Buchkapitel
Application of Numerical Quantum Transfer-Matrix Approach in the Randomly Diluted Quantum Spin Chains
verfasst von : Ryszard Matysiak, Philipp Gegenwart, Akira Ochiai, Frank Steglich
Erschienen in: Parallel Processing and Applied Mathematics
Aktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.
Wählen Sie Textabschnitte aus um mit Künstlicher Intelligenz passenden Patente zu finden. powered by
Markieren Sie Textabschnitte, um KI-gestützt weitere passende Inhalte zu finden. powered by
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.