Effect of residual strain on magnetic properties and Hall effect in chiral antiferromagnet Mn3Sn
Effect of residual strain on magnetic properties and Hall effect in chiral antiferromagnet Mn3Sn
复制标题
残余应变对手性反铁磁体Mn3Sn磁性能和霍尔效应的影响
DOI：
10.1088/1361-6463/ac5da7
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
D. L. Hou
中科院分区：
文献类型：
--
作者：
J. J. Deng;M. Y. Zhao;Y. Wang;X. Wu;X. T. Niu;L. Ma;D. W. Zhao;C. M. Zhen;D. L. Hou
本文研究了单轴应力产生的残余应变对多晶Mn3Sn磁性能和霍尔效应的影响。与压力在Mn3Sn中的作用相反，霍尔测量和我们理论计算的kagome晶格畸变都表明RS有利于抑制从反三角形反铁磁（AFM）状态到螺旋AFM状态的磁转变。此外，由于RS的作用，Mn3Sn在5k至400k的整个温度范围内观察到拓扑霍尔效应（the）。结合磁测量，我们推测该效应源于RS诱导的非共面AFM结构。我们的发现指出了一种通过应变工程实现手性非共面AFM结构的方法，从而为拓扑反铁磁体的构建提供了一条途径。
Here, the effect of residual strain (RS) generated by uniaxial stress on the magnetic properties and Hall effect of polycrystalline Mn3Sn is investigated. Contrary to the role of pressure in Mn3Sn, both Hall measurements and our theoretically calculated kagome lattice distortions suggest that RS is beneficial for suppressing the magnetic transition from an inverse triangular antiferromagnetic (AFM) state to a helical AFM state. Furthermore, the topological Hall effect (THE) is observed in Mn3Sn over the entire temperature range from 5 K to 400 K due to RS. Combined with the magnetic measurements, we speculate that the THE originates from a RS-induced non-coplanar AFM structure. Our findings point out a method to realize a chiral non-coplanar AFM structure through strain engineering, thereby providing a path for the construction of topological antiferromagnets.