Magnetic properties of 1D spin systems with compositional disorder of three-spin structural units

Autor:	V. V. Slavin, V. O. Cheranovskii
Rok vydání:	2021
Předmět:	Condensed matter physics Chemistry Condensed Matter::Strongly Correlated Electrons General Chemistry Spin-½
Zdroj:	Zeitschrift für Naturforschung B. 76:797-802
ISSN:	1865-7117 0932-0776
DOI:	10.1515/znb-2021-0133
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1e0bb00ca7cc15dc99ca2a566f2b9c4b https://doi.org/10.1515/znb-2021-0133 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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