Averievite: A copper oxide kagome antiferromagnet

A. S. Botana, H. Zheng, S. H. Lapidus, J. F. Mitchell, M. R. Norman

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

Averievite, Cu5V2O10(CsCl), is an oxide mineral composed of Cu2+ kagome layers sandwiched by Cu2+-V5+ honeycomb layers. We have synthesized this oxide and investigated its properties from ab initio calculations along with susceptibility and specific heat measurements. The data indicate a Curie-Weiss temperature of 185 K as well as long-range magnetic order at 24 K due to the significant interlayer coupling from the honeycomb copper ions. This order is suppressed by substituting copper by isoelectronic zinc, suggesting that Zn-substituted averievite is a promising spin liquid candidate. A further proposed substitution that replaces V5+ by Ti4+ not only dopes the material but is predicted to give rise to a two-dimensional electronic structure featuring Dirac crossings. As such, averievite is an attractive platform for S=1/2 kagome physics with the potential for realizing novel electronic states.

Original languageEnglish (US)
Article number054421
JournalPhysical Review B
Volume98
Issue number5
DOIs
StatePublished - Aug 21 2018

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Botana, A. S., Zheng, H., Lapidus, S. H., Mitchell, J. F., & Norman, M. R. (2018). Averievite: A copper oxide kagome antiferromagnet. Physical Review B, 98(5), [054421]. https://doi.org/10.1103/PhysRevB.98.054421