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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44 Citations (Scopus)


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)


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