Unveiling the electronic transformations in the semi-metallic correlated-electron transitional oxide Mo₈O₂₃.

ABSTRACT: Mo₈O₂₃ is a low-dimensional chemically robust transition metal oxide coming from a prospective family of functional materials, MoO_3-x, ranging from a wide gap insulator (x = 0) to a metal (x = 1). The large number of stoichometric compounds with intermediate x have widely different properties. In Mo₈O₂₃, an unusual charge density wave transition has been suggested to occur above room temperature, but its low temperature behaviour is particularly enigmatic. We present a comprehensive experimental study of the electronic structure associated with various ordering phenomena in this compound, complemented by theory. Density-functional theory (DFT) calculations reveal a cross-over from a semi-metal with vanishing band overlap to narrow-gap

SUBMITTER: Nasretdinova V 

PROVIDER: S-EPMC6828745 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature