Electronic correlation assisted ferroelectric metallic state in LiOsO${}_3$

Abstract

LiOsO${}_3$ has been recently identified as the first unambiguous "ferroelectric metal", experimentally realizing a prediction from 1965 by Anderson and Blount. In this work, we investigate the metallic state in LiOsO${}_3$ by means of infrared spectroscopy supplemented by Density Functional Theory and Dynamical Mean Field Theory calculations. Our measurements and theoretical calculations clearly show that LiOsO${}_3$ is a very bad metal with a small quasiparticle weight, close to a Mott-Hubbard localization transition. The agreement between experiments and theory allows us to ascribe all the relevant features in the optical conductivity to strong electron-electron correlations within the $t_{2g}$ manifold of the osmium atoms.

5 pages, 3 figures

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Cited by in corpus (16)

• Evidence for the weakly coupled electron mechanism in an Anderson-Blount polar metal
• Coexistence of polar distortion and metallicity in PbTi1-xNbxO3
• Polar Metals Taxonomy for Materials Classification and Discovery
• Linear and nonlinear optical probe of the ferroelectric-like phase transition in a polar metal, LiOsO3
• Probing ferroelectricity in highly conducting materials through their elastic response: persistence of ferroelectricity in metallic BaTiO3-d
• Free carrier induced ferroelectricity in layered perovskites
• Pressure-induced enhancement of non-polar to polar transition temperature in metallic LiOsO${}_3$
• Comparative ab initio study of the structural, electronic, magnetic, and dynamical properties of LiOsO${}_3$ and NaOsO${}_3$
• Coexistence of polar displacements and conduction in doped ferroelectrics: an ab initio comparative study
• Osmates on the verge of a Hund's-Mott transition: The different fates of NaOsO${}_3$ and LiOsO${}_3$
• Effect of strain and doping on the polar metal phase in LiOsO${}_3$
• Influences of spin-orbit coupling on Fermi surfaces and Dirac cones in ferroelectric-like polar metals
• Evidence for an extended critical fluctuation region above the polar ordering transition in LiOsO${}_3$
• Possible origin of the absence of magnetic order in LiOsO${}_3$: Spin-orbit coupling controlled ground state
• Strain Induced Slater Transition in Polar Metal LiOsO${}_3$
• Static and Fluctuating Magnetic Moments in the Ferroelectric Metal LiOsO${}_3$