Abstract:
We consider the competition of magnetic and charge ordering in model cuprate within the framework of the simplified static 2D spin-pseudospin model. This model is equivalent to the 2D dilute antiferromagnetic (AFM) Ising model with charged impurities. We present the mean-field results for the system under study and make a brief comparison with classicalMonte Carlo (MC) calculations. Numerical simulations show that the cases of strong exchange and strong charge correlation differ qualitatively. For a strong exchange, the AFM phase is unstable with respect to the phase separation (PS) into the pseudospin (charge) and magnetic (spin) subsystems, which behave like immiscible quantum liquids. An analytical expression was obtained for the PS temperature.
This work was supported by Program 211 of the Government of the Russian Federation (Agreement 02.A03.21.0006), the Ministry of Education and Science of the Russian federation (projects nos. 2277 and 5719), and the Russian Foundation for Basic Research (project no. 18-32-00837).
Citation:
Yu. D. Panov, V. A. Ulitko, K. S. Budrin, D. N. Yasinskaya, A. A. Chikov, “Features of the competition of the spin and pseudospin subsystems in the model cuprate”, Fizika Tverdogo Tela, 61:5 (2019), 822–827; Phys. Solid State, 61:4 (2019), 707–713
\Bibitem{PanUliBud19}
\by Yu.~D.~Panov, V.~A.~Ulitko, K.~S.~Budrin, D.~N.~Yasinskaya, A.~A.~Chikov
\paper Features of the competition of the spin and pseudospin subsystems in the model cuprate
\jour Fizika Tverdogo Tela
\yr 2019
\vol 61
\issue 5
\pages 822--827
\mathnet{http://mi.mathnet.ru/ftt8806}
\crossref{https://doi.org/10.21883/FTT.2019.05.47574.03F}
\elib{https://elibrary.ru/item.asp?id=39133724}
\transl
\jour Phys. Solid State
\yr 2019
\vol 61
\issue 4
\pages 707--713
\crossref{https://doi.org/10.1134/S106378341905024X}
Linking options:
https://www.mathnet.ru/eng/ftt8806
https://www.mathnet.ru/eng/ftt/v61/i5/p822
This publication is cited in the following 3 articles:
Citation in format AMSBIB
Contact us: