PHASE TRANSITION AND CROSSOVERS IN THE CAIRO LATTICE OF ISING DIPOLES

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The thermodynamics of finite-number Ising spin systems on the Cairo spin ice lattice is investigated using Monte Carlo numerical calculations in the model of long-range dipole-dipole interaction with limited radius. The Cairo lattice consists of vertices combining three or four nearest neighboring spins. A parameter is added to the model, the variation of which allows changing the balance of interaction energies between vertices with three and four nearest spins without changing the geometry of the Cairo lattice. It is shown that the variational parameter affects the nature of the phase transition process from short-range order to disorder. At low values of this parameter, the transition is a crossover, while at its high values, it is a second-order phase transition.

Sobre autores

Yu. Shevchenko

Department of Theoretical Physics and Intelligent Technologies, Institute of Science-Intensive Technologies and Advanced Materials, Far Eastern Federal University; Institute of Applied Mathematics, Far Eastern Branch of the Russian Academy of Sciences

Email: shevchenko.yuriy.a@gmail.com

Департамент теоретической физики и интеллектуальных технологий

Rússia, 690922, Vladivostok; 690041, Vladivostok

E. Lobanova

Department of Theoretical Physics and Intelligent Technologies, Institute of Science-Intensive Technologies and Advanced Materials, Far Eastern Federal University; Institute of Applied Mathematics, Far Eastern Branch of the Russian Academy of Sciences

Email: nefedev.kv@dvfu.ru

Департамент теоретической физики и интеллектуальных технологий

Rússia, 690922, Vladivostok; 690041, Vladivostok

I. Trefilov

Department of Theoretical Physics and Intelligent Technologies, Institute of Science-Intensive Technologies and Advanced Materials, Far Eastern Federal University; Institute of Applied Mathematics, Far Eastern Branch of the Russian Academy of Sciences

Email: nefedev.kv@dvfu.ru

Департамент теоретической физики и интеллектуальных технологий

Rússia, 690922, Vladivostok; 690041, Vladivostok

V. Strongin

Department of Theoretical Physics and Intelligent Technologies, Institute of Science-Intensive Technologies and Advanced Materials, Far Eastern Federal University; Institute of Applied Mathematics, Far Eastern Branch of the Russian Academy of Sciences

Email: nefedev.kv@dvfu.ru

Департамент теоретической физики и интеллектуальных технологий

Rússia, 690922, Vladivostok; 690041, Vladivostok

P. Ovchinnikov

Department of Theoretical Physics and Intelligent Technologies, Institute of Science-Intensive Technologies and Advanced Materials, Far Eastern Federal University; Institute of Applied Mathematics, Far Eastern Branch of the Russian Academy of Sciences

Email: nefedev.kv@dvfu.ru

Департамент теоретической физики и интеллектуальных технологий

Rússia, 690922, Vladivostok; 690041, Vladivostok

K. Nefedev

Department of Theoretical Physics and Intelligent Technologies, Institute of Science-Intensive Technologies and Advanced Materials, Far Eastern Federal University; Institute of Applied Mathematics, Far Eastern Branch of the Russian Academy of Sciences

Autor responsável pela correspondência
Email: nefedev.kv@dvfu.ru

Департамент теоретической физики и интеллектуальных технологий

Rússia, 690922, Vladivostok; 690041, Vladivostok

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