Novel magnetism of Ir5+(5d4) Ions in the double perovskite Sr2YIrO6. Journal Article uri icon

Overview

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┬áK. 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.

publication date

  • February 7, 2014

Full Author List

  • Cao G; Qi TF; Li L; Terzic J; Yuan SJ; DeLong LE; Murthy G; Kaul RK

Other Profiles

Additional Document Info

start page

  • 056402

volume

  • 112

issue

  • 5