Pressure-induced insulating state in Ba1-x Rx IrO3 ( R=Gd, Eu) single crystals

O. B. Korneta, S. Chikara, S. Parkin, L. E. Delong, P. Schlottmann, G. Cao

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

BaIrO3 is an unusual insulator with coexistent weak ferromagnetism, charge- and spin-density waves. Dilute rare-earth doping (e.g., 4%) for Ba induces a metallic state whereas application of modest pressure (≤12.1 kbar) readily restores an insulating state characterized by a three order of magnitude increase in resistivity. Since pressure generally increases orbital overlap and broadens energy bands, a pressure-induced insulating state is not commonplace. The profoundly dissimilar responses of the ground state to light doping and low hydrostatic pressures signal an unusual, delicate interplay between structural and electronic degrees of freedom in BaIrO3.

Original languageEnglish
Article number045101
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume81
Issue number4
DOIs
StatePublished - Jan 5 2010

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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