Zigzag magnetic order in the Kitaev spin-liquid candidate material RuBr3 with a honeycomb lattice

Yoshinori Imai; Kazuhiro Nawa; Yasuhiro Shimizu; Wakana Yamada; Hideyuki Fujihara; Takuya Aoyama; Ryotaro Takahashi; Daisuke Okuyama; Takamasa Ohashi; Masato Hagihala; Shuki Torii; Daisuke Morikawa; Masami Terauchi; Takayuki Kawamata; Masatsune Kato; Hirotada Gotou; Masayuki Itoh; Taku J. Sato; Kenya Ohgushi

doi:10.1103/PhysRevB.105.L041112

Zigzag magnetic order in the Kitaev spin-liquid candidate material RuBr3 with a honeycomb lattice

Yoshinori Imai, Kazuhiro Nawa, Yasuhiro Shimizu, Wakana Yamada, Hideyuki Fujihara, Takuya Aoyama, Ryotaro Takahashi, Daisuke Okuyama, Takamasa Ohashi, Masato Hagihala, Shuki Torii, Daisuke Morikawa, Masami Terauchi, Takayuki Kawamata, Masatsune Kato, Hirotada Gotou, Masayuki Itoh, Taku J. Sato, Kenya Ohgushi

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Abstract

We successfully synthesize RuBr3, which is a candidate material of a Kitaev spin liquid, via a high-pressure synthesis. The material RuBr3 possesses a BiI3-type structure (space group R3¯) where Ru3+ forms an ideal honeycomb lattice even at room temperature and it does not show a structural transition at low temperatures. RuBr3 has a negative Weiss temperature and it undergoes a zigzag antiferromagnetic transition at TN=34 K, as does α-RuCl3 (TN=7-14K) which is a promising candidate for a Kitaev spin liquid. Although both compounds of RuBr3 and α-RuCl3 have a zigzag magnetic order at low temperature, the magnetic order in RuBr3 is more robust than in α-RuCl3. Our results indicate that the Kitaev and non-Kitaev interactions can be modified in ruthenium trihalides by changing the ligand sites, and will provide another platform for exploring Kitaev spin liquids.

Original language	English
Article number	L041112
Journal	Physical Review B
Volume	105
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevB.105.L041112
Publication status	Published - 2022 Jan 15

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Imai, Y., Nawa, K., Shimizu, Y., Yamada, W., Fujihara, H., Aoyama, T., Takahashi, R., Okuyama, D., Ohashi, T., Hagihala, M., Torii, S., Morikawa, D., Terauchi, M., Kawamata, T., Kato, M., Gotou, H., Itoh, M., Sato, T. J., & Ohgushi, K. (2022). Zigzag magnetic order in the Kitaev spin-liquid candidate material RuBr3 with a honeycomb lattice. Physical Review B, 105(4), Article L041112. https://doi.org/10.1103/PhysRevB.105.L041112

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title = "Zigzag magnetic order in the Kitaev spin-liquid candidate material RuBr3 with a honeycomb lattice",

abstract = "We successfully synthesize RuBr3, which is a candidate material of a Kitaev spin liquid, via a high-pressure synthesis. The material RuBr3 possesses a BiI3-type structure (space group R3¯) where Ru3+ forms an ideal honeycomb lattice even at room temperature and it does not show a structural transition at low temperatures. RuBr3 has a negative Weiss temperature and it undergoes a zigzag antiferromagnetic transition at TN=34 K, as does α-RuCl3 (TN=7-14K) which is a promising candidate for a Kitaev spin liquid. Although both compounds of RuBr3 and α-RuCl3 have a zigzag magnetic order at low temperature, the magnetic order in RuBr3 is more robust than in α-RuCl3. Our results indicate that the Kitaev and non-Kitaev interactions can be modified in ruthenium trihalides by changing the ligand sites, and will provide another platform for exploring Kitaev spin liquids.",

author = "Yoshinori Imai and Kazuhiro Nawa and Yasuhiro Shimizu and Wakana Yamada and Hideyuki Fujihara and Takuya Aoyama and Ryotaro Takahashi and Daisuke Okuyama and Takamasa Ohashi and Masato Hagihala and Shuki Torii and Daisuke Morikawa and Masami Terauchi and Takayuki Kawamata and Masatsune Kato and Hirotada Gotou and Masayuki Itoh and Sato, {Taku J.} and Kenya Ohgushi",

note = "Publisher Copyright: {\textcopyright} 2022 American Physical Society.",

year = "2022",

month = jan,

day = "15",

doi = "10.1103/PhysRevB.105.L041112",

language = "English",

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Imai, Y , Nawa, K, Shimizu, Y, Yamada, W, Fujihara, H, Aoyama, T, Takahashi, R, Okuyama, D, Ohashi, T, Hagihala, M, Torii, S, Morikawa, D , Terauchi, M, Kawamata, T, Kato, M, Gotou, H, Itoh, M, Sato, TJ & Ohgushi, K 2022, 'Zigzag magnetic order in the Kitaev spin-liquid candidate material RuBr3 with a honeycomb lattice', Physical Review B, vol. 105, no. 4, L041112. https://doi.org/10.1103/PhysRevB.105.L041112

TY - JOUR

T1 - Zigzag magnetic order in the Kitaev spin-liquid candidate material RuBr3 with a honeycomb lattice

AU - Imai, Yoshinori

AU - Nawa, Kazuhiro

AU - Shimizu, Yasuhiro

AU - Yamada, Wakana

AU - Fujihara, Hideyuki

AU - Aoyama, Takuya

AU - Takahashi, Ryotaro

AU - Okuyama, Daisuke

AU - Ohashi, Takamasa

AU - Hagihala, Masato

AU - Torii, Shuki

AU - Morikawa, Daisuke

AU - Terauchi, Masami

AU - Kawamata, Takayuki

AU - Kato, Masatsune

AU - Gotou, Hirotada

AU - Itoh, Masayuki

AU - Sato, Taku J.

AU - Ohgushi, Kenya

PY - 2022/1/15

Y1 - 2022/1/15

N2 - We successfully synthesize RuBr3, which is a candidate material of a Kitaev spin liquid, via a high-pressure synthesis. The material RuBr3 possesses a BiI3-type structure (space group R3¯) where Ru3+ forms an ideal honeycomb lattice even at room temperature and it does not show a structural transition at low temperatures. RuBr3 has a negative Weiss temperature and it undergoes a zigzag antiferromagnetic transition at TN=34 K, as does α-RuCl3 (TN=7-14K) which is a promising candidate for a Kitaev spin liquid. Although both compounds of RuBr3 and α-RuCl3 have a zigzag magnetic order at low temperature, the magnetic order in RuBr3 is more robust than in α-RuCl3. Our results indicate that the Kitaev and non-Kitaev interactions can be modified in ruthenium trihalides by changing the ligand sites, and will provide another platform for exploring Kitaev spin liquids.

AB - We successfully synthesize RuBr3, which is a candidate material of a Kitaev spin liquid, via a high-pressure synthesis. The material RuBr3 possesses a BiI3-type structure (space group R3¯) where Ru3+ forms an ideal honeycomb lattice even at room temperature and it does not show a structural transition at low temperatures. RuBr3 has a negative Weiss temperature and it undergoes a zigzag antiferromagnetic transition at TN=34 K, as does α-RuCl3 (TN=7-14K) which is a promising candidate for a Kitaev spin liquid. Although both compounds of RuBr3 and α-RuCl3 have a zigzag magnetic order at low temperature, the magnetic order in RuBr3 is more robust than in α-RuCl3. Our results indicate that the Kitaev and non-Kitaev interactions can be modified in ruthenium trihalides by changing the ligand sites, and will provide another platform for exploring Kitaev spin liquids.

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DO - 10.1103/PhysRevB.105.L041112

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JO - Physical Review B

JF - Physical Review B

IS - 4

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Zigzag magnetic order in the Kitaev spin-liquid candidate material RuBr3 with a honeycomb lattice

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