A theoretical model for tellurite-sulfates Na$_2$Cu$_5$(TeO$_3$)(SO$_4$)$_3$(OH)$_4$ and K$_2$Cu$_5$(TeO$_3$)(SO$_4$)$_3$(OH)$_4$

I. L. Bartolom/'e; L. Errico; V. Fernandez; M. Matera; A. V. Gil Rebaza; C. A. Lamas

doi:10.1103/PhysRevB.106.195119

paper

A theoretical model for tellurite-sulfates Na $_{2}$ Cu $_{5}$ (TeO $_{3}$ )(SO $_{4}$ ) $_{3}$ (OH) $_{4}$ and K $_{2}$ Cu $_{5}$ (TeO $_{3}$ )(SO $_{4}$ ) $_{3}$ (OH) $_{4}$

arXiv:2210.15416 · doi:10.1103/PhysRevB.106.195119

Abstract

A theoretical model for two new tellurite-sulfates, namely Na $_{2}$ Cu $_{5}$ (TeO $_{3}$ )(SO $_{4}$ ) $_{3}$ (OH) $_{4}$ and K $_{2}$ Cu $_{5}$ (TeO $_{3}$ )(SO $_{4}$ ) $_{3}$ (OH) $_{4}$ is determined to be compatible with ab-initio calculations. The results obtained in this work show that some previous speculations in the literature about the couplings are correct, obtaining a model with a mixture of ferromagnetic and antiferromagnetic couplings. We use a combination of numerical techniques to study the magnetic properties of the model. Our numerical calculations based on the density-matrix renormalization group method reveal that the system presents Ising-like magnetization plateaux at rational values of the saturation magnetization.

arXiv comment7 pages, 8 figures

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A theoretical model for tellurite-sulfates Na2​Cu5​(TeO3​)(SO4​)3​(OH)4​ and K2​Cu5​(TeO3​)(SO4​)3​(OH)4​

Abstract

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A theoretical model for tellurite-sulfates Na $_{2}$ Cu $_{5}$ (TeO $_{3}$ )(SO $_{4}$ ) $_{3}$ (OH) $_{4}$ and K $_{2}$ Cu $_{5}$ (TeO $_{3}$ )(SO $_{4}$ ) $_{3}$ (OH) $_{4}$