SR and NMR studies on the van der Waals cluster magnet Nb3Cl8

doi:10.1088/1674-1056/adc667

中国物理B ›› 2025, Vol. 34 ›› Issue (5): 57501-057501.doi: 10.1088/1674-1056/adc667

SR and NMR studies on the van der Waals cluster magnet Nb₃Cl₈

Lin Yang(杨林)^1,2,†, Detong Wu(吴德桐)^3,4,1,†, Xin Han(韩鑫)^1,2, Jun Luo(罗军)^1,2, Bo Liu(刘波)¹, Xiaoyan Ma(马肖燕)¹, Huiqian Luo(罗会仟)¹, Jie Yang(杨杰)¹, Bing Shen(沈冰)^3,4, Rhea Stewart⁵, Devashibhai Adroja⁵, Youguo Shi(石友国)^1,6,7,‡, Rui Zhou(周睿)^1,§, and Shiliang Li(李世亮)^1,2,7,¶

1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
2 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China;
3 Center for Neutron Science and Technology, Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices, School of Physics, Sun Yat-Sen University, Guangzhou 510275, China;
4 State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-Sen University, Guangzhou 510275, China;
5 ISIS Neutron and Muon Source, Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, UK;
6 Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China;
7 Songshan Lake Materials Laboratory, Dongguan 523808, China

收稿日期:2025-03-12 修回日期:2025-03-27 接受日期:2025-03-28 出版日期:2025-04-18 发布日期:2025-05-06
通讯作者: Youguo Shi, Rui Zhou, Shiliang Li E-mail:ygshi@iphy.ac.cn;rzhou@iphy.ac.cn;slli@iphy.ac.cn
基金资助:
Project supported by the National Key Research and Development Program of China (Grant Nos. 2022YFA1403800, 2022YFA1403400, 2021YFA1400400, 2023YFA1406100, and 2024YFA1409200), the National Natural Science Foundation of China (Grant Nos. 12274444, 12374142, and 12304170), and the Chinese Academy of Sciences President’s International Fellowship Initiative (Grant No. 2025PG0007). A portion of this work was carried out at the Synergetic Extreme Condition User Facility (SECUF, https://cstr.cn/31123.02.SECUF). We thank ISIS Facility for beam time (Grant No. RB2310088).

SR and NMR studies on the van der Waals cluster magnet Nb₃Cl₈

1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
2 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China;
3 Center for Neutron Science and Technology, Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices, School of Physics, Sun Yat-Sen University, Guangzhou 510275, China;
4 State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-Sen University, Guangzhou 510275, China;
5 ISIS Neutron and Muon Source, Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, UK;
6 Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China;
7 Songshan Lake Materials Laboratory, Dongguan 523808, China

Received:2025-03-12 Revised:2025-03-27 Accepted:2025-03-28 Online:2025-04-18 Published:2025-05-06
Contact: Youguo Shi, Rui Zhou, Shiliang Li E-mail:ygshi@iphy.ac.cn;rzhou@iphy.ac.cn;slli@iphy.ac.cn
Supported by:
Project supported by the National Key Research and Development Program of China (Grant Nos. 2022YFA1403800, 2022YFA1403400, 2021YFA1400400, 2023YFA1406100, and 2024YFA1409200), the National Natural Science Foundation of China (Grant Nos. 12274444, 12374142, and 12304170), and the Chinese Academy of Sciences President’s International Fellowship Initiative (Grant No. 2025PG0007). A portion of this work was carried out at the Synergetic Extreme Condition User Facility (SECUF, https://cstr.cn/31123.02.SECUF). We thank ISIS Facility for beam time (Grant No. RB2310088).

摘要/Abstract

摘要： The van der Waals cluster magnet Nb$_3$Cl$_8$ has recently been shown to possibly host a quantum-spin-liquid ground state. The Nb ions in this compound form a breathing kagome structure, where the magnetic moment comes from three nearest Nb ions forming a molecular cluster with spin $1/2$. Previous bulk measurements including magnetic susceptibility and specific heat suggested the existence of spinon Fermi surfaces. Here we further probe the spin system by nuclear magnetic resonance (NMR) and muon spin rotation and relaxation (μSR) techniques. We confirm that there is no magnetic long-range order and the dynamical spin fluctuations persist down to 0.075 K. These results provide further evidence that Nb$_3$Cl$_8$ may host a quantum spin liquid.

关键词: quantum spin liquids, cluster magnet, spin excitations

Abstract: The van der Waals cluster magnet Nb$_3$Cl$_8$ has recently been shown to possibly host a quantum-spin-liquid ground state. The Nb ions in this compound form a breathing kagome structure, where the magnetic moment comes from three nearest Nb ions forming a molecular cluster with spin $1/2$. Previous bulk measurements including magnetic susceptibility and specific heat suggested the existence of spinon Fermi surfaces. Here we further probe the spin system by nuclear magnetic resonance (NMR) and muon spin rotation and relaxation (μSR) techniques. We confirm that there is no magnetic long-range order and the dynamical spin fluctuations persist down to 0.075 K. These results provide further evidence that Nb$_3$Cl$_8$ may host a quantum spin liquid.

Key words: quantum spin liquids, cluster magnet, spin excitations

中图分类号: (Quantum spin liquids, valence bond phases and related phenomena)

75.10.Kt

76.75.+i (Muon spin rotation and relaxation) 74.25.nj (Nuclear magnetic resonance)

Lin Yang(杨林), Detong Wu(吴德桐), Xin Han(韩鑫), Jun Luo(罗军), Bo Liu(刘波), Xiaoyan Ma(马肖燕), Huiqian Luo(罗会仟), Jie Yang(杨杰), Bing Shen(沈冰), Rhea Stewart, Devashibhai Adroja, Youguo Shi(石友国), Rui Zhou(周睿), and Shiliang Li(李世亮). SR and NMR studies on the van der Waals cluster magnet Nb₃Cl₈[J]. 中国物理B, 2025, 34(5): 57501-057501.

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SR and NMR studies on the van der Waals cluster magnet Nb₃Cl₈

SR and NMR studies on the van der Waals cluster magnet Nb₃Cl₈

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