Low dimensionalization of magnetic ordering in S r2 v O4 by hydride ion substitution

Joonho Bang, Satoru Matsuishi, Sachiko Maki, Jun Ichi Yamaura, Masatoshi Hiraishi, Soshi Takeshita, Ichihiro Yamauchi, Kenji M. Kojima, Hideo Hosono

研究成果: Article査読

5 被引用数 (Scopus)

抄録

Substitution of an oxygen anion with a hydrogen anion induced the low dimensionalization of magnetic ordering in a transition metal oxide Sr2VO4. Upon increasing x up to ∼1 in Sr2VO4-xHx, the hydride ions were ordered linearly, and the magnetic susceptibility was simultaneously suppressed. It was found that this suppression was attributed to the formation of a quasi-one-dimensional antiferromagnetic spin chain, maintaining that each of the vanadium cations is two-dimensionally bridged by hydride and oxide ions. Density functional theory calculations demonstrate that the quasi-one-dimensional property is caused by much enhanced anisotropic exchange couplings (J1/J2∼6) originating from the absence of π bonding between H1s and V3d orbitals. Utilizing a hydride ion that has an ionic radius similar to an oxygen anion and only one energetically available orbital of 1s is a different approach to realization of magnetic low dimensionalization in 3d early transition metal oxides.

本文言語English
論文番号064414
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
92
6
DOI
出版ステータスPublished - 2015 8 11
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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