Competition between the Spin and Pseudospin Subsystems in a Model Cuprate

Abstract

The competition between the magnetic and charge orderings in a model cuprate is considered in terms of a simplified static 2D spin-pseudospin model. This model is equivalent to the 2D dilute antiferromagnetic (AFM) Ising model with charged impurities. The mean-field approximation results are presented for the system under study and briefly compared to the classical Monte Carlo (MC) calculations. The numerical simulation shows that the cases of the strong exchange and the strong charge correlation differ qualitatively. In the case of a strong exchange, the AMF phase is instable with respect to the phase separation (PS) into the pseudospin (charge) and magnetic (spin) subsystems that behave as immiscible quantum liquids. The analytical expression has been obtained for the PS temperature.

arXiv comment7 pages, 3 figures

References in corpus (14)

• Long-range incommensurate charge fluctuations in (Y,Nd)Ba2Cu3O(6+x)
• Direct observation of competition between superconductivity and charge density wave order in YBa2Cu3Oy
• Magnetic-field-induced charge-stripe order in the high temperature superconductor YBa2Cu3Oy
• Ubiquitous Interplay between Charge Ordering and High-Temperature Superconductivity in Cuprates
• Spatially modulated "Mottness" in La2-xBaxCuO4
• Resonant x-ray scattering studies of charge order in cuprates
• Striped superconductors: How the cuprates intertwine spin, charge and superconducting orders
• Progress in Neutron Scattering Studies of Spin Excitations in High-Tc Cuprates
• Magnetic neutron scattering in hole doped cuprate superconductors
• High Temperature Superconductivity: Ineluctable Complexity
• Two types of nematicity in the phase diagram of the cuprate superconductor YBa${}_2$Cu${}_3$O${}_y$
• Superconductivity, Antiferromagnetism, and Neutron Scattering
• What is the true charge transfer gap in parent insulating cuprates?
• Spin-charge interplay in antiferromagnetic La${}_{2-x}$Sr${}_x$CuO${}_4$ studied by the muons, neutrons, and ARPES techniques

Cited by in corpus (2)

• Specific Features of Phase States of a Diluted 2D Magnet with Frustration
• Nontrivial Ground State Degeneracy of the Spin-Pseudospin Model of a Two-Dimensional Magnet Near the Frustration Point