Metal-Insulator phase diagram and orbital selectivity in 3-orbital models with rotationally invariant Hund coupling

Details Metal-Insulator phase diagram and orbital selectivity in 3-orbital models with rotationally invariant Hund coupling Metal-Insulator phase diagram and orbital selectivity in 3-orbital models with rotationally invariant Hund coupling

2008-12-08

arxiv.org/abs/0812.1520v1

Phys. Rev. B 79, 115119 (2009)

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

10.1103/PhysRevB.79.115119

A three band model containing the essential physics of transition metal oxides with partially filled t_2g shells is solved in the single-site dynamical mean field approximation, using the full rotationally invariant Slater-Kanamori interactions. We compute the metal-Mott insulator phase diagram in the space of chemical potential and interaction strength, determine the response of the different phases to perturbations which break the orbital symmetry, and establish the regimes in which an orbital selective Mott phase occurs. The results are compared to data on titanates, ruthenates, vanadates and C_60.

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