Cu-NMR Study on the Quasi one Dimensional Antiferromagnet Cu₃Mo₂O₉

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• 作者：T. Kawase^a ; ^b ; ^c ; ^d ; ^{gotoo-t@sophia.ac.jp" class="auth_mail" title="E-mail the corresponding author} ; T. Goto^a ; ^b ; ^c ; ^d ; H. Kuroe^a ; ^b ; ^c ; ^d ; T. Sekine^a ; ^b ; ^c ; ^d ; T. Sasaki^a ; ^b ; ^c ; ^d ; M. Hase^a ; ^b ; ^c ; ^d ; K. Oka^a ; ^b ; ^c ; ^d ; T. Ito^a ; ^b ; ^c ; ^d ; H. Eisaki^a ; ^b ; ^c ; ^d
• 关键词：Quasi one-dimensional antiferromagnet ; geometrical spin frustration ; NMR
• 刊名：Physics Procedia
• 出版年：2015
• 出版时间：2015
• 年：2015
• 卷：75
• 期：Complete
• 页码：641-646
• 全文大小：238 K

文摘

Quasi one dimensional antiferromagnet Cu₃Mo₂O₉ consists of spin chains and inequivalent spin pairs clinging on them, and shows the magnetic order at T_N = 7.9K. The local structure of tetrahedron formed by neighboring four spins suggests a non-collinear spin structure in the ordered state and hence the multiferroicity. We have performed Cu-NMR measurements at low temperatures below T_N and showed that the observed spectra are consistent with the report by the recent neutron elastic scattering experiments in that the chain site Cu has only an extremely small ordered moment.