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arXiv 2402.11087cond-mat.mtrl-sci
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Mn2-xZnxSb中独特的依赖于成分的拓扑霍尔效应

Distinct Composition-Dependent Topological Hall Effect in Mn2-xZnxSb

Md Rafique Un Nabi, Yue Li, Suzanne G E te Velthuis, Santosh Karki Chhetri, Dinesh Upreti, Rabindra Basnet, Gokul Acharya, Charudatta Phatak, Jin Hu

AI总结:

本研究发现Mn2-xZnxSb中拓扑霍尔效应具有依赖于成分的截然不同的温度依赖性,揭示了不同成分下磁性相互作用与结构的差异及磁输运强耦合,为探索可调输运效应提供了独特平台。

摘要:

自旋电子学是处于磁学与电子学交叉领域的不断发展的学科,探索电子电荷和自旋特性在先进电子器件中的创新应用。拓扑霍尔效应作为自旋电子学的关键组成部分,因围绕非共面手性自旋纹理的新兴理论而显得重要。本研究聚焦于Mn2-xZnxSb,该材料结晶于中心对称空间群,具有可通过Zn含量调节的丰富磁相。通过全面的磁性和输运表征,我们发现高Zn(x>0.6)样品表现出随温度降低而增强的THE,而低Zn(x<0.6)样品中的THE则呈现相反的趋势。这些截然不同的THE温度依赖性的共存表明,不同成分具有非常不同的磁性相互作用/结构,并突显了Mn2-xZnxSb中磁性与输运之间的强耦合。我们的发现有助于理解中心对称四方晶格中的拓扑磁性,将Mn2-xZnxSb确立为探索可调输运效应的独特平台,并为自旋电子学领域的进一步探索开辟了途径。

英文摘要:

Spintronics, an evolving interdisciplinary field at the intersection of magnetism and electronics, explores innovative applications of electron charge and spin properties for advanced electronic devices. The topological Hall effect, a key component in spintronics, has gained significance due to emerging theories surrounding noncoplanar chiral spin textures. This study focuses on Mn2-xZnxSb, a material crystalizing in centrosymmetric space group with rich magnetic phases tunable by Zn contents. Through comprehensive magnetic and transport characterizations, we found that the high-Zn (x>0.6) samples display THE which is enhanced with decreasing temperature, while THE in the low-Zn (x<0.6) samples show an opposite trend. The coexistence of those distinct temperature dependences for THE suggests very different magnetic interactions/structure for different compositions and underscores the strong coupling between magnetism and transport in Mn2-xZnxSb. Our findings contribute to understanding topological magnetism in centrosymmetric tetragonal lattices, establishing Mn2-xZnxSb as a unique platform for exploring tunable transport effects and opening avenues for further exploration in the realm of spintronics.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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