Phase diagram of emergent orders of rare-earth nickelates

Phase diagram of Rare-earth nickelates, thin films and heterostructures, is a paradigmatic problem of strongly correlated material having strong coupling in between spin, orbital, lattice degrees of freedom. [1]
Recently, there have been suggestions on possible new emergent orders includes antiferromagnetism. [2]
In this talk, based on low energy hamiltonian of eg
manifold,[3] we discussed possible emergent orders of Rare-earth nickelates includes superconductivity, charge disproportionation, and magnetism. These emergent orders would be accessible by tuning material parameters such as interaction strength and effective crystal field.

[1] S. Catalani et al., Rep. Prog. Phys. 81 <a href="tel:<a href="tel:(2018) 046501">(2018) 046501</a>">(2018) 046501</a>
[2] H. Gui et al., Nature Communications 9 (2018)
[3] A. Subedi et al., Phys. Rev. B 91, 075128 (2015)