A spin molecule model for geometrically frustrated spinel ZnFe 2O 4

Keisuke Tomiyasu, Kazuya Kamazawa

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

We analyzed the single-crystal neutron scattering data on a frustrated spinel ZnFe 2O 4, which is governed by dominant antiferromagnetic third-neighbor exchange interactions J 3 and additional ferromagnetic J 1 [K. Kamazawa et al.: Phys. Rev. B 68 (2003) 024412]. A spin dodecamer model that is formed on the kagome plane is proposed. It is notable that, although J 3 bonds consist of two types of exchange paths Fe-O-Fe-O-Fe and Fe-O-Zn-O-Fe, only the spatial spin correlations corresponding to the former paths are antiferromagnetic while those of all the latter paths are ferromagnetic in the dodecamer. This fact suggests that the frustration is relieved by utilizing the difference of exchange paths even in the same-distant interactions, that is to say, that only specific orbital mixing is selectively enhanced as an origin of the spin molecule.

Original languageEnglish
Article numberSB024
Journaljournal of the physical society of japan
Volume80
Issue numberSUPPL. B
DOIs
Publication statusPublished - 2011 Dec 1

Keywords

  • Geometrical frustration
  • Molecular spin correlation
  • Spin liquid

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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