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Ground-state tuning of metal-insulator transition by compositional variations in BaIr1-xRuxO3 (0 <= x <= 1)

Title: Ground-state tuning of metal-insulator transition by compositional variations in BaIr1-xRuxO3 (0 <= x <= 1).
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Name(s): Yuan, S. J., author
Butrouna, K., author
Terzic, J., author
Zheng, H., author
Aswartham, S., author
DeLong, L. E., author
Ye, Feng, author
Schlottmann, P., author
Cao, G., author
Type of Resource: text
Genre: Text
Date Issued: 2016-04-25
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: 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+ (4d(4)) ions for Ir4+ (5d(5)) 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 T-N 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.
Identifier: FSU_libsubv1_wos_000374950300008 (IID), 10.1103/PhysRevB.93.165136 (DOI)
Keywords: bairo3, density-wave formation, sr2iro4, weak ferromagnetism
Publication Note: The publisher’s version of record is available at http://www.dx.doi.org/10.1103/PhysRevB.93.165136
Persistent Link to This Record: http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000374950300008
Owner Institution: FSU
Is Part Of: Physical Review B.
2469-9950
Issue: iss. 16, vol. 93

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Yuan, S. J., Butrouna, K., Terzic, J., Zheng, H., Aswartham, S., DeLong, L. E., … Cao, G. (2016). Ground-state tuning of metal-insulator transition by compositional variations in BaIr1-xRuxO3 (0 <= x <= 1). Physical Review B. Retrieved from http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000374950300008