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Anomalous Hall effect and magnetic transition in the kagome material YbMn6Sn6

Lei Jiang,Feng-Ren Fan,Dong Chen,Qingge Mu,Yiyan Wang,Xiaoyu Yue,Na Li,Yan Sun,Qiuju Li,Dandan Wu,Ying Zhou,Xuefeng Sun,Hui Liang

Published 2024 in Journal of Physics: Condensed Matter

ABSTRACT

We investigate the magnetic and transport properties of a kagome magnet YbMn6Sn6. We have grown YbMn6Sn6 single crystals having a HfFe6Ge6 type structure with ordered Yb and Sn atoms, which is different from the distorted structure previously reported. The single crystal undergoes a ferromagnetic phase transition around 300 K and a ferrimagnetic transition at approximately 30 K, and the magnetic transition at low temperature may be correlated to the ordered Yb sublattice. Negative magnetoresistance has been observed at high temperatures, while the positive magnetoresistance appears at 5 K when the current is oriented out of kagome plane. We observe a large anisotropic anomalous Hall effect with the intrinsic Hall contribution of 141 Ω−1cm−1 for σzxint and 32 Ω−1cm−1 for σxyint , respectively. These values are similar to those in YMn6Sn6 with the same anisotropy. The magnetic transition and anomalous Hall behavior in YbMn6Sn6 highlights the influence of the ordered Yb atoms and rare earth elements on its magnetic and transport properties.

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