6 papers
The classical-quantum disproportionation transition and magnetic ordering in RNiO nickelates
A. S. Moskvin, Yu. D. Panov
The insulator-quasi-metal (bad metal) transition observed in Jahn-Teller (JT) magnets orthonickelates RNiO (R = rare earth, or yttrium Y) is considered a canonical example of t…
Modified Monte Carlo method with thermostat algorithm for model orthonickelates
V. S. Ryumshin, Yu. D. Panov, V. A. Ulitko +1
The results of numerical simulation using a modified Monte Carlo method with a thermostat algorithm for a pseudospin model of orthonickelates are presented. Temperature phase diagr…
Modified Monte Carlo method with the heat bath algorithm for a model cuprate
Yu. D. Panov, V. A. Ulitko, D. N. Yasinskaya +1
The results of numerical simulation using a modified Monte Carlo method with a heat bath algorithm for the pseudospin model of cuprates are presented. The temperature phase diagram…
Insulator-bad metal transition in RNiO nickelates beyond Hubbard model and density functional theory
A. S. Moskvin
The insulator-bad metal transition observed in the Jahn-Teller (JT) magnets orthonickelates RNiO (R = rare earth or yttrium Y) is considered to be a canonical example of the Mo…
The Monte Carlo Method for the Orthonickelate Model
Yu. D. Panov, S. V. Nuzhin, V. S. Ryumshin +1
The peculiarities of phase states of the triplet boson model for orthonickelates are investigated analytically and by means of numerical simulations. The conditions of thermodynami…
The mean field approximation for a system of triplet bosons in nickelates
V. S. Ryumshin, S. V. Nuzhin, Yu. D. Panov +1
Rare-earth orthonickelates RNiO3 are Jahn-Teller magnets, unstable with respect to the anti-Jahn-Teller disproportionation reaction with the formation of a system equivalent to a s…