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  Charge-ordering cascade with spin-orbit Mott dimer states in metallic iridium ditelluride

Ko, K.-T., Lee, H.-H., Kim, D.-H., Yang, J.-J., Cheong, S.-W., Eom, M. J., et al. (2015). Charge-ordering cascade with spin-orbit Mott dimer states in metallic iridium ditelluride. Nature Communications, 6: 7342, pp. 1-7. doi:10.1038/ncomms8342.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-11F9-4 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-1756-5
Genre: Journal Article

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 Creators:
Ko, K.-T.1, Author              
Lee, H.-H.2, Author
Kim, D.-H.2, Author
Yang, J.-J.2, Author
Cheong, S.-W.2, Author
Eom, M. J.2, Author
Kim, J. S.2, Author
Gammag, R.2, Author
Kim, K.-S.2, Author
Kim, H.-S.2, Author
Kim, T.-H.2, Author
Yeom, H.-W.2, Author
Koo, T.-Y.2, Author
Kim, H.-D.2, Author
Park, J.-H.2, Author
Affiliations:
1Kyung-Tae Ko, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863451              
2External Organizations, ou_persistent22              

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 Abstract: Spin-orbit coupling results in technologically-crucial phenomena underlying magnetic devices like magnetic memories and energy-efficient motors. In heavy element materials, the strength of spin-orbit coupling becomes large to affect the overall electronic nature and induces novel states such as topological insulators and spin-orbit-integrated Mott states. Here we report an unprecedented charge-ordering cascade in IrTe2 without the loss of metallicity, which involves localized spin-orbit Mott states with diamagnetic Ir4+-Ir4+ dimers. The cascade in cooling, uncompensated in heating, consists of first order-type consecutive transitions from a pure Ir3(+) phase to Ir3+-Ir4(+) charge-ordered phases, which originate from Ir 5d to Te 5p charge transfer involving anionic polymeric bond breaking. Considering that the system exhibits superconductivity with suppression of the charge order by doping, analogously to cuprates, these results provide a new electronic paradigm of localized charge-ordered states interacting with itinerant electrons through large spin-orbit coupling.

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Language(s): eng - English
 Dates: 2015-062015-06-10
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: ISI: 000357173300001
DOI: 10.1038/ncomms8342
 Degree: -

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Title: Nature Communications
  Abbreviation : Nat. Commun.
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 6 Sequence Number: 7342 Start / End Page: 1 - 7 Identifier: ISSN: 2041-1723
CoNE: /journals/resource/2041-1723