Magnetic properties of 1D spin systems with compositional disorder of three-spin structural units
Author:
Slavin Victor V.1ORCID, Cheranovskii Vladyslav O.2ORCID
Affiliation:
1. B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine , 61103, Nauky Ave 47 , Kharkiv , Ukraine 2. V. N. Karazin Kharkiv National University , 61022, Svoboda Sq.4 , Kharkiv , Ukraine
Abstract
Abstract
The exact diagonalization (ED) approach and Quantum Monte-Carlo (QMC) method were used for the study of the lowest energy states and low-temperature magnetic properties of some disordered 1D Heisenberg spin-1/2 systems formed by two types of three-spin structural units. For the system with a singlet ground state and the random distribution of structural units along the chain system, a significant decrease of the size of the intermediate magnetization plateau in comparison to the corresponding uniform spin system was found. For the “polyallyl” spin chain with a macroscopic value of the ground state spin, a transition to the singlet ground state due to the effect of compositional disorder was observed.
Publisher
Walter de Gruyter GmbH
Subject
General Chemistry
Reference20 articles.
1. Gatteschi, D., Sessoli, R., Villian, J. Molecular Nanomagnets; Oxford University Press: Oxford, 2006. 2. Chorazy, S., Zakrzewski, J. J., Magott, M., Korzeniak, T., Nowicka, B., Pinkowicz, D., Podgajny, R., Sieklucka, B. Chem. Soc. Rev. 2020, 49, 5945–6001; https://doi.org/10.1039/d0cs00067a. 3. Soos, Z. G., Klein, D. J. Charge-transfer in solid state complexes. In Molecular Associations; Foster, R., Ed. Academic Press: New York, Vol. 1, 1975, pp. 1–109. 4. Radváková, A., Ziolkovskiy, D. V., Cheranovskii, V. O., Feher, A., Kajňaková, M., Kazheva, O. N., Alexandrov, G. G., Dyachenko, O. A., Starodub, V. A. J. Phys. Chem. Solid. 2009, 70, 1471–1477; https://doi.org/10.1016/j.jpcs.2009.09.004. 5. Klein, D. J., Alexander, S. A. Stud. Phys. Theor. Chem. 1987, 51, 404–419.
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