2008
DOI: 10.1103/physrevlett.101.166405
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Spin Freezing Transition and Non-Fermi-Liquid Self-Energy in a Three-Orbital Model

Abstract: A single-site dynamical mean field study of a three band model with the rotationally invariant interactions appropriate to the t2g levels of a transition metal oxide reveals a quantum phase transition between a paramagnetic metallic phase and an incoherent metallic phase with frozen moments. The Mott transitions occurring at electron densities n = 2, 3 per site take place inside the frozen moment phase. The critical line separating the two phases is characterized by a self energy with the frequency dependence … Show more

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Cited by 275 publications
(429 citation statements)
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“…It provides an experimental and theoretical ground for understanding the complex physics from unconventional superconductors [2,3] to transition metal oxides [11] and non Fermi liquids [4] in a bottom up way. Our work demonstrates that SOC largely controls electron correlations in HI systems and thus -within the reasoning of dynamical mean field theory -also in Hund's metals.…”
Section: Resultsmentioning
confidence: 99%
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“…It provides an experimental and theoretical ground for understanding the complex physics from unconventional superconductors [2,3] to transition metal oxides [11] and non Fermi liquids [4] in a bottom up way. Our work demonstrates that SOC largely controls electron correlations in HI systems and thus -within the reasoning of dynamical mean field theory -also in Hund's metals.…”
Section: Resultsmentioning
confidence: 99%
“…Recent examples of exotic phases of matter, including unconventional superconductivity in iron pnictides and chalcogenides [1][2][3] as well as non-Fermi liquid behavior in ruthenates [4][5][6], depend subtly on the complex interplay of magnetic moments and delocalized electron states taking place in transition metal d-shells. All these materials combine sizable Coulomb interactions and hybridization, which are comparable in their strength.…”
Section: Apr 2016mentioning
confidence: 99%
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“…As shown previously, 19 the spin correlation function then changes from Pauli to Curie-Weiss behavior, indicating a spin freezing transition, in close analogy to the one found in the degenerate three-band model near n = 2. 28 In addition, Im (iω n ) exhibits a kink near ω n ≈ 0.1, . .…”
mentioning
confidence: 99%