Challenges in design of Kitaev materials: Magnetic interactions from competing energy scales

Stephen M. Winter, Ying Li, Harald Olaf Jeschke, Roser Valentí

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156 Citations (Scopus)

Abstract

In this study, we reanalyze the magnetic interactions in the Kitaev spin-liquid candidate materials Na2IrO3,α-RuCl3, and α-Li2IrO3 using nonperturbative exact diagonalization methods. These methods are more appropriate given the relatively itinerant nature of the systems suggested in previous works. We treat all interactions up to third neighbors on equal footing. The computed terms reveal significant long-range coupling, bond anisotropy, and/or off-diagonal couplings which we argue naturally explain the observed ordered phases in these systems. Given these observations, the potential for realizing the spin-liquid state in real materials is analyzed, and synthetic challenges are defined and explained.

Original languageEnglish
Article number214431
JournalPhysical Review B
Volume93
Issue number21
DOIs
Publication statusPublished - Jun 27 2016
Externally publishedYes

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ASJC Scopus subject areas

  • Condensed Matter Physics

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