Rb-NMR study of the quasi-one-dimensional competing spin-chain compound Rb2Cu2Mo3O12

Kazuki Matsui; Ayato Yagi; Yukihiro Hoshino; Sochiro Atarashi; Masashi Hase; Takahiko Sasaki; Takayuki Goto

doi:10.1103/PhysRevB.96.220402

Rb-NMR study of the quasi-one-dimensional competing spin-chain compound Rb2Cu2Mo3O12

Kazuki Matsui, Ayato Yagi, Yukihiro Hoshino, Sochiro Atarashi, Masashi Hase, Takahiko Sasaki, Takayuki Goto

IMR - Materials Property Division

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

A Rb-NMR study has been performed on the quasi-one-dimensional competing spin chain Rb2Cu2Mo3O12 with ferromagnetic and antiferromagnetic exchange interactions on nearest-neighboring and next-nearest neighboring spins, respectively. The system changes from a gapped ground state at zero field to a gapless state at HC≃2T, where the existence of magnetic order below 1 K was demonstrated by a broadening of the NMR spectrum, associated with a critical divergence of 1/T1. In the higher-temperature region, T1-1 showed a power-law-type temperature dependence, from which the field dependence of the Luttinger parameter K was obtained and compared with theoretical calculations based on the spin nematic Tomonaga-Luttinger liquid (TLL) state.

Original language	English
Article number	220402
Journal	Physical Review B
Volume	96
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevB.96.220402
Publication status	Published - 2017 Dec 8

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10.1103/PhysRevB.96.220402

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title = "Rb-NMR study of the quasi-one-dimensional competing spin-chain compound Rb2Cu2Mo3O12",

abstract = "A Rb-NMR study has been performed on the quasi-one-dimensional competing spin chain Rb2Cu2Mo3O12 with ferromagnetic and antiferromagnetic exchange interactions on nearest-neighboring and next-nearest neighboring spins, respectively. The system changes from a gapped ground state at zero field to a gapless state at HC≃2T, where the existence of magnetic order below 1 K was demonstrated by a broadening of the NMR spectrum, associated with a critical divergence of 1/T1. In the higher-temperature region, T1-1 showed a power-law-type temperature dependence, from which the field dependence of the Luttinger parameter K was obtained and compared with theoretical calculations based on the spin nematic Tomonaga-Luttinger liquid (TLL) state.",

author = "Kazuki Matsui and Ayato Yagi and Yukihiro Hoshino and Sochiro Atarashi and Masashi Hase and Takahiko Sasaki and Takayuki Goto",

note = "Funding Information: This work was supported by JSPS KAKENHI Grants No. JP24540350 and No. JP15K05148. A part of the experiment was performed at IMR, Tohoku University. The authors are grateful for kind and valuable discussions with Prof. Masahiro Sato, Prof. Toshiya Hikihara, Prof. Hidekazu Tanaka, and Prof. Tomi Ohtsuki. Publisher Copyright: {\textcopyright} 2017 American Physical Society.",

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doi = "10.1103/PhysRevB.96.220402",

language = "English",

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AU - Matsui, Kazuki

AU - Yagi, Ayato

AU - Hoshino, Yukihiro

AU - Atarashi, Sochiro

AU - Hase, Masashi

AU - Sasaki, Takahiko

AU - Goto, Takayuki

N1 - Funding Information: This work was supported by JSPS KAKENHI Grants No. JP24540350 and No. JP15K05148. A part of the experiment was performed at IMR, Tohoku University. The authors are grateful for kind and valuable discussions with Prof. Masahiro Sato, Prof. Toshiya Hikihara, Prof. Hidekazu Tanaka, and Prof. Tomi Ohtsuki. Publisher Copyright: © 2017 American Physical Society.

PY - 2017/12/8

Y1 - 2017/12/8

N2 - A Rb-NMR study has been performed on the quasi-one-dimensional competing spin chain Rb2Cu2Mo3O12 with ferromagnetic and antiferromagnetic exchange interactions on nearest-neighboring and next-nearest neighboring spins, respectively. The system changes from a gapped ground state at zero field to a gapless state at HC≃2T, where the existence of magnetic order below 1 K was demonstrated by a broadening of the NMR spectrum, associated with a critical divergence of 1/T1. In the higher-temperature region, T1-1 showed a power-law-type temperature dependence, from which the field dependence of the Luttinger parameter K was obtained and compared with theoretical calculations based on the spin nematic Tomonaga-Luttinger liquid (TLL) state.

AB - A Rb-NMR study has been performed on the quasi-one-dimensional competing spin chain Rb2Cu2Mo3O12 with ferromagnetic and antiferromagnetic exchange interactions on nearest-neighboring and next-nearest neighboring spins, respectively. The system changes from a gapped ground state at zero field to a gapless state at HC≃2T, where the existence of magnetic order below 1 K was demonstrated by a broadening of the NMR spectrum, associated with a critical divergence of 1/T1. In the higher-temperature region, T1-1 showed a power-law-type temperature dependence, from which the field dependence of the Luttinger parameter K was obtained and compared with theoretical calculations based on the spin nematic Tomonaga-Luttinger liquid (TLL) state.

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Rb-NMR study of the quasi-one-dimensional competing spin-chain compound Rb2Cu2Mo3O12

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