| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Crystal growth, magnetic and electrical transport properties of the kagome magnet RCr6Ge6 (R=Gd-Tm) |
| Xingyu Yang(杨星宇)1,2, Qingqi Zeng(曾庆祺)2,†, Miao He(何苗)1,2, Xitong Xu(许锡童)2, Haifeng Du(杜海峰)1,2,‡, and Zhe Qu(屈哲)1,2,§ |
1 Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, China;
2 Anhui Key Laboratory of Low-Energy Quantum Materials and Devices, CAS Key Laboratory of Photovoltaic and Energy Conservation Materials, High Magnetic Field Laboratory of Chinese Academy of Sciences (CHMFL), HFIPS, CAS, Hefei 230031, China |
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Abstract Kagome magnets have attracted considerable research attention due to the interplay between topology, magnetism and electronic correlations. In this study we report single-crystal synthesis of a series of the kagome magnets $R$Cr$_{6}$Ge$_{6}$ ($R={\rm Gd}$-Tm) that possess defect-free Cr kagome lattices and systematically study their magnetic and electrical transport properties. The transition from a canted ferrimagnetic to a paramagnetic state in GdCr$_{6}$Ge$_{6}$, TbCr$_{6}$Ge$_{6}$, DyCr$_{6}$Ge$_{6}$, HoCr$_{6}$Ge$_{6}$, ErCr$_{6}$Ge$_{6}$ and TmCr$_{6}$Ge$_{6}$ occurs at 11.3K, 10.8K, 4.3K, 2.5K, 3.3K and below 2K, respectively, due to $R$-$R$ interactions within the compounds. Magnetization measurements reveal highly anisotropic magnetism with canted magnetic moments in these compounds. In electrical transport, both negative and positive magnetoresistances at different magnetic fields and temperatures have been observed due to the competition between different scattering mechanisms. This work enriches our understanding of the Cr-based kagome magnets and paves the way to search for possible topological responses in this family.
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Received: 05 February 2024
Revised: 08 April 2024
Accepted manuscript online:
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PACS:
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75.20.En
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(Metals and alloys)
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75.40.Cx
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(Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.))
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75.30.Gw
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(Magnetic anisotropy)
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| Fund: Project supported by the National Key R&D Program of China (Grant No.2021YFA1600204),the National Natural Science Foundation of China (Grant Nos.U2032213,12104461,12374129,12304156,and 52325105),and Chinese Academy of Sciences (Grant Nos.YSBR-084 and JZHKYPT-2021-08). |
Corresponding Authors:
Qingqi Zeng, Haifeng Du, Zhe Qu
E-mail: qqzeng@hmfl.ac.cn;duhf@hmfl.ac.cn;zhequ@hmfl.ac.cn
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Cite this article:
Xingyu Yang(杨星宇), Qingqi Zeng(曾庆祺), Miao He(何苗), Xitong Xu(许锡童), Haifeng Du(杜海峰), and Zhe Qu(屈哲) Crystal growth, magnetic and electrical transport properties of the kagome magnet RCr6Ge6 (R=Gd-Tm) 2024 Chin. Phys. B 33 077501
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