Strongly electron-correlated semimetal RuI3 with a layered honeycomb structure

Kazuhiro Nawa, Yoshinori Imai, Youhei Yamaji, Hideyuki Fujihara, Wakana Yamada, Ryotaro Takahashi, Takumi Hiraoka, Masato Hagihala, Shuki Torii, Takuya Aoyama, Takamasa Ohashi, Yasuhiro Shimizu, Hirotada Gotou, Masayuki Itoh, Kenya Ohgushi, Taku J. Sato

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


A polymorph of RuI3 synthesized under high pressure was found to have a two-layered honeycomb structure. The resistivity of RuI3 exhibited semimetallic behavior, in contrast to the insulating properties of α-RuCl3. In addition, Pauli paramagnetic behavior was observed in the temperature dependence of the magnetic susceptibility and the nuclear spin-lattice relaxation rate 1=T1. Band structure calculations indicate that the contribution of the I 5p components to the low-energy t2g bands effectively reduces the Coulomb repulsion, leading to semimetallic properties. The physical properties also suggest strong electron correlations in RuI3.

Original languageEnglish
Article number123703
Journaljournal of the physical society of japan
Issue number12
Publication statusPublished - 2021 Dec 15

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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