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Bound spinon excitations in the spin-$$frac{1}{2}$$ anisotropic triangular antiferromagnet Ca$$_{3}$$ReO$$_{5}$$Cl$$_{2}$$

Nawa, Kazuhiro*; Hirai, Daigoro*; Kofu, Maiko   ; Nakajima, Kenji  ; Murasaki, Ryo*; Kogane, Satoshi*; Kimata, Motoi*; Nojiri, Hiroyuki*; Hiroi, Zenji*; Sato, Taku*

The spin excitations of the $$S$$ = $$frac{1}{2}$$ anisotropic triangular antiferromagnet Ca$$_{3}$$ReO$$_{5}$$Cl$$_{2}$$ were investigated by inelastic neutron-scattering experiments. The spin excitation spectrum exhibits sharp dispersive modes in addition to a spinonlike continuum. The consistency with the simulated spectrum based on the random-phase approximation is better for Ca$$_{3}$$ReO$$_{5}$$Cl$$_{2}$$ than for Cs$$_{2}$$CuCl$$_{4}$$, indicating that the spin system in the former remains closer to a Tomonaga-Luttinger liquidlike disordered state.

Language

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English

Journal

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Physical Review Research (Internet)

Volume

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2

Number

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4

Pages

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p.043121_1 - 043121_11

Publication Year/Month

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2020/12

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Paper URL

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https://doi.org/10.1103/PhysRevResearch.2.043121

DOI for research data

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Keywords

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J-PARC; 非弾性散乱; AMATERAS

Research Facility

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J-PARC物質・生命科学実験施設  

Press Release

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Article of JAEA R&D Review

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Cooperating Institute

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東北大学金属材料研究所; 東北大学多元物質科学研究所; 東京大学物性研究所

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- Accesses

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