Lifshitz transition driven by spin fluctuations and spin-orbit renormalization in NaOsO${}_3$

Abstract

In systems where electrons form both dispersive bands and small local spins, we show that changes of the spin configuration can tune the bands through a Lifshitz transition, resulting in a continuous metal-insulator transition associated with a progressive change of the Fermi surface topology. In contrast to a Mott-Hubbard and Slater pictures, this spin-driven Lifshitz transition appears in systems with small electron-electron correlation and large hybridization. We show that this situation is realized in 5$d$ distorted perovskites with an half-filled $t_{2g}$ bands such as NaOsO${}_3$, where the strong $p-d$ hybridization reduces the local moment, and spin-orbit coupling causes a large renormalization of the electronic mobility. This weakens the role of electronic correlations and drives the system towards an itinerant magnetic regime which enables spin-fluctuations.

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• Three-Dimensional Electronic Structure of type-II Weyl Semimetal WTe${}_2$
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• Converged GW quasiparticle energies for transition metal oxide perovskites
• Spin-orbit coupling controlled $J=3/2$ electronic ground state in 5$d^3$ oxides
• Strongly Gapped Spin-Wave Excitation in the Insulating Phase of NaOsO3
• Evolution of the magnetic excitations in NaOsO${}_3$ through its metal-insulator transition
• Comparative ab initio study of the structural, electronic, magnetic, and dynamical properties of LiOsO${}_3$ and NaOsO${}_3$
• Spin-orbit coupling and correlations in three-orbital systems
• Osmates on the verge of a Hund's-Mott transition: The different fates of NaOsO${}_3$ and LiOsO${}_3$
• Crossover from itinerant to localized magnetic excitations through the metal-insulator transition in NaOsO${}_{\text{3}}$
• BaOsO${}_3$: A Hund's metal in the presence of strong spin-orbit coupling
• Hidden orders in spin-orbit entangled correlated insulators
• First Principles Study of the Giant Magnetic Anisotropy Energy in Bulk Na4IrO4
• Direct observation of electron density reconstruction at the metal-insulator transition in NaOsO3
• Effects of the structural distortion on the electronic band structure of {\boldmath $\mathrm{NaOs}{\mathrm{O}}_3$} studied within density functional theory and a three-orbital model
• Doping-induced insulator-metal transition in the Lifshitz magnetic insulator NaOsO3
• Magnetically induced metal-insulator transition in Pb2CaOsO6
• Spin and orbital dynamics through the metal-to-insulator transition in Cd${}_2$Os${}_2$O${}_7$ probed with high-resolution RIXS
• Ultrafast dynamics in the Lifshitz-type 5$d$ pyrochlore antiferromagnet Cd${}_2$Os${}_2$O${}_7$
• Superconductivity on the verge of electronic topological transition in Fe based superconductors
• J = 0 nonmagnetic insulating state in K${}_2$Os$X_6$ (X = F, Cl and Br)
• Coupled spin-orbital fluctuations in a three orbital model for $4d$ and $5d$ oxides with electron fillings $n=3,4,5$ -- Application to $\mathrm{NaOs}{\mathrm{O}}_3$, $\mathrm{C}{\mathrm{a}}_2\mathrm{Ru}{\mathrm{O}}_4$, and $\mathrm{S}{\mathrm{r}}_2\mathrm{Ir}{\mathrm{O}}_4$
• Melting of magnetic order in ${\mathrm{NaOsO}}_3$ by fs laser pulses
• Polaron-driven switching of octupolar order in doped 5d${}^2$ double perovskite
• Altermagnetism and Weak Magnetism in the Insulating Distorted Perovskite Antiferromagnet NaOsO${}_3$