Electron-lattice coupling, orbital stability and the phase diagram of Ca${}_{2-x}$Sr${}_x$RuO${}_4$

Abstract

Hartree-Fock calculations are presented of a theoretical model describing the Sr/CaRuO${}_4$ family of compounds. Both commensurate and incommensurate magnetic states are considered, along with orbital ordering and the effect of lattice distortions. For reasonable parameter values, interactions disfavor orbital disproportionation. A coherent description of the observed phase diagram is obtained.

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References in corpus (2)

• Orbital-selective Mott transitions in the degenerate Hubbard model
• Orbital Dependent Phase Control in Ca2-xSrxRuO4

Cited by in corpus (18)

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• LDA+Slave-Boson approach to the correlated electronic structure of the metamagnetic bilayer ruthenate Sr${}_3$Ru${}_2$O${}_7$
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• Orbital Dependence of Quasiparticle Lifetimes in Sr2RuO4
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• Unrestricted Hartree-Fock Analysis of Sr${}_{3-x}$Ca${}_x$Ru${}_2$O${}_7$