Impact of orbital degrees of freedom on geometrical frustration in the kagome-like magnet SrVx Ga12-x O19

J. Miyazaki, T. Sonehara, D. Akahoshi, H. Kuwahara, J. E. Kim, K. Kato, M. Takata, T. Katsufuji

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We studied kagome-like magnets, SrVx Ga12-x O19 with V3+ (3 d2 in the triply degenerate t2g states), as a geometrically frustrated spin system with orbital degrees of freedom. We observed a suppression of low-temperature spin entropy and an anomalous contraction of the V triangles on the kagome lattice, which can be regarded as the V trimerization with spin-singlet formation. This result, which is in clear contrast to their Cr3+ (3 d3) analogs exhibiting a spin-liquid behavior, indicates a substantial impact of orbitals on geometrically frustrated magnets.

Original languageEnglish
Article number180410
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume79
Issue number18
DOIs
Publication statusPublished - 2009 May 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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