Crystal growth,magnetic and electrical transport properties of the kagome magnet RCr6Ge6(R=Gd-Tm)

杨星宇 ¹曾庆祺 ²何苗 ¹许锡童 ²杜海峰 ¹屈哲¹

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作者信息

1. Science Island Branch of Graduate School,University of Science and Technology of China,Hefei 230026,China;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
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 RCr6Ge6(R=Gd-Tm)that possess defect-free Cr kagome lattices and systematically study their magnetic and electrical trans-port properties.The transition from a canted ferrimagnetic to a paramagnetic state in GdCr6Ge6,TbCr6Ge6,DyCr6Ge6,HoCr6Ge6,ErCr6Ge6 and TmCr6Ge6 occurs at 11.3 K,10.8 K,4.3 K,2.5 K,3.3 K and below 2 K,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.

Key words

kagome lattice/magnetism/rare earth

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基金项目

National Key R&D Program of China(2021YFA1600204)

National Natural Science Foundation of China(U2032213)

National Natural Science Foundation of China(12104461)

National Natural Science Foundation of China(12374129)

National Natural Science Foundation of China(12304156)

National Natural Science Foundation of China(52325105)

Chinese Academy of Sciences(YSBR-084)

Chinese Academy of Sciences(JZHKYPT-2021-08)

High Magnetic Field Laboratory of Anhui Province()

出版年

2024

中国物理B(英文版)

中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI

影响因子：0.995

ISSN：1674-1056

参考文献量49

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