論文 Emergent spin-1 Haldane gap and ferroelectricity in a frustrated spin-1/2 ladder

Nakamura, M. ; Hase, Masashi SAMURAI ORCID ; Kajimoto, R. ; Morioka, T. ; Sakakibara, T. ; Frontzek, M. ; Reynolds, N. ; Hagiwara, M. ; Kimura, T. ; Yamaguchi, Y. ; Tomiyasu, K. ; White, J. S. ; Onoda, S. ; Masuda, T. ; Ohira-Kawamura, S. ; Soda, M. ; Ueda, H. ; Nakajima, K. ; Inamura, Y. ; Yasui, Y. ; Yoshizawa, D. ; Hagihala, M.

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引用
Nakamura, M., Hase, Masashi, Kajimoto, R., Morioka, T., Sakakibara, T., Frontzek, M., Reynolds, N., Hagiwara, M., Kimura, T., Yamaguchi, Y., Tomiyasu, K., White, J. S., Onoda, S., Masuda, T., Ohira-Kawamura, S., Soda, M., Ueda, H., Nakajima, K., Inamura, Y., Yasui, Y., Yoshizawa, D., Hagihala, M.. Emergent spin-1 Haldane gap and ferroelectricity in a frustrated spin-1/2 ladder. https://doi.org/10.1103/PhysRevB.101.140408
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説明:

(abstract)

We report experimental and theoretical evidence that Rb2Cu2Mo3O12 has a nonmagnetic tetramer ground state of a two-leg ladder comprising　antiferromagnetically coupled frustrated spin- 1/2 chains and exhibits a Haldane spin gap of emergent spin-1 pairs. Three spin excitations split from the spin-1 triplet by a Dzyaloshinskii-Moriya interaction are identified in inelastic neutron-scattering and electron spin resonance spectra. A tiny magnetic field generates ferroelectricity without closing the spin gap, indicating a unique class of ferroelectricity induced by a vector spin chirality order.

権利情報:

キーワード: Rb2Cu2Mo3O12, ferroelectricity, Haldane gap, frustrated spin-1/2 ladder

刊行年月日: 2020-04-22

出版者: American Physical Society

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原稿種別: 論文以外のデータ

MDR DOI:

公開URL: https://doi.org/10.1103/PhysRevB.101.140408

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更新時刻: 2024-01-05 22:13:43 +0900

MDRでの公開時刻: 2021-08-14 03:54:46 +0900

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