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

K.-T. Ko, H.-H. Lee, D.-H. Kim, J.-J. Yang, S.-W. Cheong, M.J. Eom, J.S. Kim, R. Gammag, K.-S. Kim, H.-S. Kim, T.-H. Kim, H.-W. Yeom, T.-Y. Koo, H.-D. Kim and J.-H. Park ()
Additional contact information
K.-T. Ko: Pohang University of Science and Technology
H.-H. Lee: Pohang University of Science and Technology
D.-H. Kim: Pohang University of Science and Technology
J.-J. Yang: Max Plank POSTECH Center for Complex Phase Materials, Pohang University of Science and Technology
S.-W. Cheong: Pohang University of Science and Technology
M.J. Eom: Pohang University of Science and Technology
J.S. Kim: Pohang University of Science and Technology
R. Gammag: Pohang University of Science and Technology
K.-S. Kim: Pohang University of Science and Technology
H.-S. Kim: Pohang University of Science and Technology
T.-H. Kim: Pohang University of Science and Technology
H.-W. Yeom: Pohang University of Science and Technology
T.-Y. Koo: Pohang Accelerator Laboratory, Pohang University of Science and Technology
H.-D. Kim: Pohang Accelerator Laboratory, Pohang University of Science and Technology
J.-H. Park: Pohang University of Science and Technology

Nature Communications, 2015, vol. 6, issue 1, 1-7

Abstract: 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.

Date: 2015
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/ncomms8342 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms8342

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/ncomms8342

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().