论文标题
RMN中的稀土工程$ _6 $ sn $ _6 $拓扑kagome磁铁
Rare earth engineering in RMn$_6$Sn$_6$ topological kagome magnets
论文作者
论文摘要
具有电子相关性的拓扑量子材料的探索是物理的前沿，因为强烈的相互作用可能会导致新的拓扑阶段和过渡。在这里，我们报告说，一个Kagome磁铁的家族RMN $ _6 $ sn $ _6 $表现出类似于量子运输属性的量子运输属性，类似于量子限制的Chern Chern Magnet tbmn $ _6 $ _6 $ sn $ _6 $。该家族的拓扑运输，包括具有非平凡浆果相的量子振荡和由浆果曲率场引起的大型异常霍尔效应，表明存在巨大的狄拉克费米子。我们的观察结果表明，稀土磁性和拓扑电子结构之间存在密切的关系，表明稀土元素可以有效地在Kagome磁铁中设计Chern量子相。
Exploration of the topological quantum materials with electron correlation is at the frontier of physics, as the strong interaction may give rise to new topological phases and transitions. Here we report that a family of kagome magnets RMn$_6$Sn$_6$ manifest the quantum transport properties analogical to those in the quantum-limit Chern magnet TbMn$_6$Sn$_6$. The topological transport in the family, including quantum oscillations with nontrivial Berry phase and large anomalous Hall effect arising from Berry curvature field, points to the existence of massive Dirac fermions. Our observation demonstrates a close relationship between rare-earth magnetism and topological electron structure, indicating the rare-earth elements can effectively engineer the Chern quantum phase in kagome magnets.
