Switching of conducting planes by partial dimer formation in IrTe 2

Tatsuya Toriyama, Masao Kobori, Takehisa Konishi, Yukinori Ohta, Kunihisa Sugimoto, Jungeun Kim, Akihiko Fujiwara, Sunseng Pyon, Kazutaka Kudo, Minoru Nohara

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Single-crystal X-ray diffraction was employed to study the structural-electronic phase transition of IrTe2 at approximately 270 K. The lowerature structure was found to be a triclinic (space group P1̄) characterized by the partial formation of Ir2 dimers in the triangular lattice of IrTe2, resulting in a structural modulation with a wave vector of q = (1/5, 0,-1/5). First-principles band calculations demonstrate that tilted two-dimensional Fermi surfaces emerge in the triclinic phase, suggesting that switching of the conducting planes occurs from the basal plane of the trigonal IrTe2 to the tilted plane normal to q of the triclinic IrTe2.

Original languageEnglish
Article number033701
JournalJournal of the Physical Society of Japan
Issue number3
Publication statusPublished - Mar 15 2014


ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Toriyama, T., Kobori, M., Konishi, T., Ohta, Y., Sugimoto, K., Kim, J., Fujiwara, A., Pyon, S., Kudo, K., & Nohara, M. (2014). Switching of conducting planes by partial dimer formation in IrTe 2. Journal of the Physical Society of Japan, 83(3), [033701]. https://doi.org/10.7566/JPSJ.83.033701