2009/09/08 by Ching-Kit Chan, Philipp Werner, Andrew J. Millis · 50 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Condensed matter physics #Electron #Ferromagnetism #Invariant (physics) #Lattice (music) #Magnetic and transport properties of perovskites and related materials #Magnetism #Mean field theory #Phase (matter) #Phase diagram #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Spin (aerodynamics) #Statistical physics #Strongly correlated material #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.80.235114
published in Physical Review B 80(23) (American Physical Society)
arxiv created 2009/09/08 · openalex publication_date 2009/12/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Single-site dynamical mean-field theory is used to determine the magnetic and orbital-ordering phase diagram for a model of electrons moving on a lattice with three orbital states per site and with the fully rotationally invariant Slater-Kanamori on-site interactions. The model captures important aspects of the physics of transition-metal oxides with partially filled t2g shells and of electron-doped C60. We introduce an unbiased, computationally simple, and inexpensive method for estimating the presence of two-sublattice order, determine the regimes in which spatially uniform and two-sublattice spin and orbital orderings are present and give physical arguments for the origins of the different phases. Guidelines are determined for optimizing the presence of ferromagnetism, which may be desirable in applications.