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

arXiv · 2402.11087

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

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Abstract

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.

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Md Rafique Un Nabi, Yue Li, Suzanne G E te Velthuis, Santosh Karki Chhetri, Dinesh Upreti, Rabindra Basnet, Gokul Acharya, Charudatta Phatak, Jin Hu. 2024-02-16. Distinct Composition-Dependent Topological Hall Effect in Mn2-xZnxSb. https://arxiv.org/abs/2402.11087

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