One-dimensionalization by Geometrical Frustration in the Anisotropic Triangular Lattice of the 5d Quantum Antiferromagnet Ca3ReO5Cl2

Daigorou Hirai, Kazuhiro Nawa, Mitsuaki Kawamura, Takahiro Misawa, Zenji Hiroi

研究成果: Article査読

5 被引用数 (Scopus)

抄録

We report on the emergence of antiferromagnetic spin chains from two-dimensionally aligned spins on the anisotropic triangular lattice (ATL) in the insulating calcium rhenium oxychloride Ca3ReO5Cl2. The compound contains Re6+ ions, each with one unpaired electron in the dxy orbital, which are arranged to form a spin-1=2 ATL with J A=J ∼ 0.32 and J = 41 K, where J and J A are magnetic interactions in and between the chains, respectively. In spite of the apparent two-dimensionality, we observe clear evidence of a gapless spin liquid that is characteristic of the spin-1=2 Heisenberg chain. This one-dimensionalization must be caused by geometrical frustration: growing antiferromagnetic correlations in every chain effectively cancel out interchain zigzag couplings at low temperatures. Ca3ReO5Cl2 provides us with a detailed insight into the interesting physics of the ATL antiferromagnet, especially via comparison with the typical ATL compound Cs2CuCl4

本文言語English
論文番号044708
ジャーナルjournal of the physical society of japan
88
4
DOI
出版ステータスPublished - 2019
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

フィンガープリント

「One-dimensionalization by Geometrical Frustration in the Anisotropic Triangular Lattice of the 5d Quantum Antiferromagnet Ca<sub>3</sub>ReO<sub>5</sub>Cl<sub>2</sub>」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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