Anionic depolymerization transition in IrTe2

Yoon Seok Oh, J. J. Yang, Y. Horibe, S. W. Cheong

Research output: Contribution to journalArticlepeer-review

67 Scopus citations

Abstract

Selenium substitution drastically increases the transition temperature of iridium ditelluride (IrTe2) to a diamagnetic superstructure from 278 to 560 K. Transmission electron microscopy experiments revealed that this enhancement is accompanied by the evolution of nonsinusoidal structure modulations from q=1/5(101̄) to q=1/6(101̄) types. These comprehensive results are consistent with the concept of the destabilization of polymeric Te-Te bonds at the transition, the temperature of which is increased by chemical and hydrostatic pressure and by the substitution of Te with the more electronegative Se. This temperature-induced depolymerization transition in IrTe2 is unique in crystalline inorganic solids.

Original languageEnglish (US)
Article number127209
JournalPhysical review letters
Volume110
Issue number12
DOIs
StatePublished - Mar 22 2013

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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