论文标题
磁交换相互作用在手性型大厅效果的作用，$ _ {x} $ ptsn电影
Role of magnetic exchange interactions in chiral-type Hall effects of epitaxial Mn$_{x}$PtSn films
论文作者
论文摘要
基于四方MN的Heusler化合物具有丰富的交换相互作用和外来拓扑磁纹理（例如Antiskyrmions），并由手性型霍尔效应称赞。这使得材料类对于设备应用程序变得有趣。我们报告了磁交换相互作用与Mn $ _ {x} $ PTSN膜的厚度和Mn浓度的关系，该薄膜由Magnetron溅射生长。磁交换相互作用的竞争决定了有限的温度磁纹理，从而在外部磁场中的手性型厅效应。我们研究了磁场和温度的函数磁性和传输性能。我们专注于与手性旋转纹理有关的异常和手性式霍尔效应以及DC-Magnetization的行为。我们进一步确定$ i \ overline {4} 2D $结构中1.5和1.85之间的相对MN浓度的稳定晶体相。我们观察到所研究的所有化合物中的自旋晶体转变，这是由于在不同的Mn sublattices上进行交换相互作用的竞争。我们在交换相互作用方面讨论了我们的结果，并将它们与理论原子旋转计算进行了比较。
Tetragonal Mn-based Heusler compounds feature rich exchange interactions and exotic topological magnetic textures, such as antiskyrmions, complimented by the chiral-type Hall effects. This makes the material class interesting for device applications. We report the relation of the magnetic exchange interactions to the thickness and Mn concentration of Mn$_{x}$PtSn films, grown by magnetron sputtering. The competition of the magnetic exchange interactions determines the finite temperature magnetic texture and thereby the chiral-type Hall effects in external magnetic fields. We investigate the magnetic and transport properties as a function of magnetic field and temperature. We focus on the anomalous and chiral-type Hall effects and the behavior of the dc-magnetization, in relation to chiral spin textures. We further determine the stable crystal phase for a relative Mn concentration between 1.5 and 1.85 in the $I\overline{4}2d$ structure. We observe a spin-reorientation transition in all compounds studied, which is due to the competition of exchange interactions on different Mn sublattices. We discuss our results in terms of exchange interactions and compare them with theoretical atomistic spin calculations.
