标题： CeCu$_2$类型的 EuZn$_2$和 EuCd$_2$薄膜中的不同拓扑霍尔响应 显示英文标题

标题： Distinct topological Hall responses in CeCu$_2$-type EuZn$_2$ and EuCd$_2$ films

摘要： 稀土金属间化合物在AlB$_2$型及其低对称性衍生物CeCu$_2$型结构中结晶，可能容纳多种受挫磁结构和丰富的磁输运现象。 我们报告了通过分子束外延生长的CeCu$_2$型EuZn$_2$以及与同结构的EuCd$_2$相比具有高度对比性的拓扑霍尔响应。 虽然它们的磁化曲线相当相似，但在EuZn$_2$中观察到的拓扑霍尔效应更为简单，仅在一个成分在磁转变场处增强。 EuZn$_2$可能是研究磁畴边界对拓扑霍尔响应影响的独特体系，在CeCu$_2$类稀土金属间化合物中。 显示英文摘要

摘要： Rare earth intermetallic compounds crystallized in AlB$_2$-type and its low-symmetry derivative CeCu$_2$-type structures potentially host diverse frustrated magnetic structures and rich magnetotransport phenomena. We report the film growth of CeCu$_2$-type EuZn$_2$ by molecular beam epitaxy and the observation of topological Hall responses highly contrastive to isostructural EuCd$_2$. While their magnetization curves are rather similar, the topological Hall effect observed in EuZn$_2$ is simpler, with the only one component enhanced at the magnetic transition field. EuZn$_2$ may be a unique system for studying the magnetic domain boundary effect on topological Hall responses among the CeCu$_2$-type rare-earth intermetallic compounds.