Novel magnetism of Ir 5 + (5 d 4) ions in the double Perovskite Sr 2 YIrO 6

G. Cao, T. F. Qi, L. Li, J. Terzic, S. J. Yuan, L. E. Delong, G. Murthy, R. K. Kaul

Research output: Contribution to journalArticlepeer-review

154 Scopus citations

Abstract

We synthesize and study single crystals of a new double-perovskite Sr2YIrO6. Despite two strongly unfavorable conditions for magnetic order, namely, pentavalent Ir5+(5d4) ions which are anticipated to have Jeff=0 singlet ground states in the strong spin-orbit coupling (SOC) limit and geometric frustration in a face-centered cubic structure formed by the Ir5+ ions, we observe this iridate to undergo a novel magnetic transition at temperatures below 1.3 K. We provide compelling experimental and theoretical evidence that the origin of magnetism is in an unusual interplay between strong noncubic crystal fields, local exchange interactions, and "intermediate- strength" SOC. Sr2YIrO6 provides a rare example of the failed dominance of SOC in the iridates.

Original languageEnglish (US)
Article number056402
JournalPhysical review letters
Volume112
Issue number5
DOIs
StatePublished - Feb 6 2014

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

Fingerprint

Dive into the research topics of 'Novel magnetism of Ir 5 + (5 d 4) ions in the double Perovskite Sr 2 YIrO 6'. Together they form a unique fingerprint.

Cite this