| DOI | Resolve DOI: https://doi.org/10.1038/ncomms4377 |
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| Author | Search for: Dhital, C.; Search for: Hogan, T.; Search for: Zhou, W.; Search for: Chen, X.; Search for: Ren, Z.; Search for: Pokharel, M.; Search for: Okada, Y.; Search for: Heine, M.; Search for: Tian, W.1; Search for: Yamani, Z.; Search for: Opeil, C.; Search for: Helton, J.S.; Search for: Lynn, J.W.; Search for: Wang, Z.; Search for: Madhavan, V.; Search for: Wilson, S.D. |
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| Affiliation | - National Research Council of Canada. NRC Canadian Neutron Beam Centre
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| Format | Text, Article |
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| Subject | iridium; ruthenium; strontium; correlation; Coulomb criterion; nanotechnology; phase transition; crystal structure; electronics; high temperature; low temperature; mott phase; neutron diffraction; neutron scattering; phase separation; phase transition; roentgen spectroscopy; transition temperature; X ray powder diffraction |
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| Abstract | Interest in many strongly spin-orbit-coupled 5d-transition metal oxide insulators stems from mapping their electronic structures to a J eff=1/2 Mott phase. One of the hopes is to establish their Mott parent states and explore these systems' potential of realizing novel electronic states upon carrier doping. However, once doped, little is understood regarding the role of their reduced Coulomb interaction U relative to their strongly correlated 3d-electron cousins. Here we show that, upon hole-doping a candidate Jeff=1/2 Mott insulator, carriers remain localized within a nanoscale phase-separated ground state. A percolative metal-insulator transition occurs with interplay between localized and itinerant regions, stabilizing an antiferromagnetic metallic phase beyond the critical region. Our results demonstrate a surprising parallel between doped 5d- and 3d-electron Mott systems and suggest either through the near-degeneracy of nearby electronic phases or direct carrier localization that U is essential to the carrier response of this doped spin-orbit Mott insulator. © 2014 Macmillan Publishers Limited. All rights reserved. |
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| Publication date | 2014 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 21272212 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 274ca0ce-8251-4235-a4d0-5aa4157e56bb |
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| Record created | 2014-07-23 |
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| Record modified | 2020-04-22 |
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