Ground-state tuning of metal-insulator transition by compositional variations in BaI r1-x R ux O3 (0≤x≤1) GROUND-STATE TUNING of METAL-INSULATOR ⋯ S. J. YUAN et al.

S. J. Yuan; K. Butrouna; J. Terzic; H. Zheng; S. Aswartham; L. E. Delong; Feng Ye; P. Schlottmann; G. Cao

doi:10.1103/PhysRevB.93.165136

Ground-state tuning of metal-insulator transition by compositional variations in BaI r1-x R ux O3 (0≤x≤1) GROUND-STATE TUNING of METAL-INSULATOR ⋯ S. J. YUAN et al.

S. J. Yuan
, K. Butrouna
, J. Terzic
, H. Zheng
, S. Aswartham
, L. E. Delong
, Feng Ye
, P. Schlottmann
, G. Cao

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Hexagonal BaIrO3 is a magnetic insulator driven by the spin-orbit interaction (SOI), whereas BaRuO3 is an enhanced paramagnetic metal. Our investigation of structural, magnetic, transport, and thermal properties reveals that substitution of Ru4+ (4d4) ions for Ir4+ (5d5) ions in BaIrO3 reduces the magnitudes of the SOI and a monoclinic structural distortion and rebalances the competition between the SOI and the lattice degrees of freedom to render an evolution from a magnetic insulting state to a robust metallic state. The central findings of this paper are as follows: (1) light Ru doping (0<x≤0.15) prompts simultaneous, precipitous drops in both the magnetic ordering temperature TN and the electrical resistivity, and (2) heavier Ru doping (0.41≤x≤0.9) induces a robust metallic state without any long-range magnetic order. All results suggest a critical role of the lattice degrees of freedom in determining the ground state in the heavy transition-metal oxides.

Original language	English
Article number	165136
Journal	Physical Review B
Volume	93
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevB.93.165136
State	Published - Apr 25 2016

Bibliographical note

Publisher Copyright:
© 2016 American Physical Society.

Funding

This work was supported by the National Science Foundation via Grant No. DMR-1265162 (G.C.) and Department of Energy (BES) through Grants No. DE-FG02-98ER45707 (P.S.) and No. DE-FG02-97ER45653 (L.E.D.).

Funders	Funder number
U.S. Department of Energy Oak Ridge National Laboratory U.S. Department of Energy National Science Foundation National Energy Research Scientific Computing Center
U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of China	DMR-1265162
DOE Basic Energy Sciences	DE-FG02-97ER45653, DE-FG02-98ER45707

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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Yuan, S. J., Butrouna, K., Terzic, J., Zheng, H., Aswartham, S., Delong, L. E., Ye, F., Schlottmann, P., & Cao, G. (2016). Ground-state tuning of metal-insulator transition by compositional variations in BaI r1-x R ux O3 (0≤x≤1) GROUND-STATE TUNING of METAL-INSULATOR ⋯ S. J. YUAN et al. Physical Review B, 93(16), Article 165136. https://doi.org/10.1103/PhysRevB.93.165136

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Ground-state tuning of metal-insulator transition by compositional variations in BaI r1-x R ux O3 (0≤x≤1) GROUND-STATE TUNING of METAL-INSULATOR ⋯ S. J. YUAN et al.

Abstract

Bibliographical note

Funding

ASJC Scopus subject areas

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