LiOsO3 has been recently identified as the first unambiguous "ferroelectric metal," experimentally realizing a prediction by Anderson and Blount [Phys. Rev. Lett. 14, 217 (1965)]. In this Rapid Communication, we investigate the metallic state in LiOsO3 by means of infrared spectroscopy supplemented by density functional theory and dynamical mean-field theory calculations. Our measurements and theoretical calculations clearly show that LiOsO3 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.

Electronic correlations in the ferroelectric metallic state of LiOsO3 / Lo Vecchio, I.; Giovannetti, G.; Autore, M.; Di Pietro, P.; Perucchi, A.; He, Jianfeng; Yamaura, K.; Capone, M.; Lupi, Stefano. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - STAMPA. - 93:16(2016). [10.1103/PhysRevB.93.161113]

Electronic correlations in the ferroelectric metallic state of LiOsO3

LUPI, Stefano
2016

Abstract

LiOsO3 has been recently identified as the first unambiguous "ferroelectric metal," experimentally realizing a prediction by Anderson and Blount [Phys. Rev. Lett. 14, 217 (1965)]. In this Rapid Communication, we investigate the metallic state in LiOsO3 by means of infrared spectroscopy supplemented by density functional theory and dynamical mean-field theory calculations. Our measurements and theoretical calculations clearly show that LiOsO3 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.
2016
Electronic, Optical and Magnetic Materials; Condensed Matter Physics
01 Pubblicazione su rivista::01a Articolo in rivista
Electronic correlations in the ferroelectric metallic state of LiOsO3 / Lo Vecchio, I.; Giovannetti, G.; Autore, M.; Di Pietro, P.; Perucchi, A.; He, Jianfeng; Yamaura, K.; Capone, M.; Lupi, Stefano. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - STAMPA. - 93:16(2016). [10.1103/PhysRevB.93.161113]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/911628
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