Possible Tomonaga-Luttinger spin liquid state in the spin-1/2 inequilateral diamond-chain compound K3Cu3AlO2(SO4)4

Masayoshi Fujihala, Hiroko Koorikawa, Setsuo Mitsuda, Katsuhiro Morita, Takami Tohyama, Keisuke Tomiyasu, Akihiro Koda, Hirotaka Okabe, Shinichi Itoh, Tetsuya Yokoo, Soshi Ibuka, Makoto Tadokoro, Masaki Itoh, Hajime Sagayama, Reiji Kumai, Youichi Murakami

研究成果: Article

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K3Cu3AlO2(SO4)4 is a highly one-dimensional spin-1/2 inequilateral diamond-chain antiferromagnet. Spinon continuum and spin-singlet dimer excitations are observed in the inelastic neutron scattering spectra, which is in excellent agreement with a theoretical prediction: A dimer-monomer composite structure, where the dimer is caused by strong antiferromagnetic (AFM) coupling and the monomer forms an almost isolated quantum AFM chain controlling low-energy excitations. Moreover, muon spin rotation/relaxation spectroscopy shows no long-range ordering down to 90 mK, which is roughly three orders of magnitude lower than the exchange interaction of the quantum AFM chain. K3Cu3AlO2(SO4)4 is, thus, regarded as a compound that exhibits a Tomonaga-Luttinger spin liquid behavior at low temperatures close to the ground state.

元の言語English
記事番号16785
ジャーナルScientific reports
7
発行部数1
DOI
出版物ステータスPublished - 2017 12 1

ASJC Scopus subject areas

  • General

フィンガープリント Possible Tomonaga-Luttinger spin liquid state in the spin-1/2 inequilateral diamond-chain compound K<sub>3</sub>Cu<sub>3</sub>AlO<sub>2</sub>(SO<sub>4</sub>)<sub>4</sub>' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

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    Fujihala, M., Koorikawa, H., Mitsuda, S., Morita, K., Tohyama, T., Tomiyasu, K., Koda, A., Okabe, H., Itoh, S., Yokoo, T., Ibuka, S., Tadokoro, M., Itoh, M., Sagayama, H., Kumai, R., & Murakami, Y. (2017). Possible Tomonaga-Luttinger spin liquid state in the spin-1/2 inequilateral diamond-chain compound K3Cu3AlO2(SO4)4. Scientific reports, 7(1), [16785]. https://doi.org/10.1038/s41598-017-16935-9