Gonzalez Betancourt Ruben Dario, Zubáč Jan, Geishendorf Kevin, Ritzinger Philipp, Růžičková Barbora, Kotte Tommy, Železný Jakub, Olejník Kamil, Springholz Gunther, Büchner Bernd, Thomas Andy, Výborný Karel, Jungwirth Tomas, Reichlová Helena, Kriegner Dominik
Institute of Physics ASCR, v.v.i., Prague, Czechia.
Leibniz Institute for Solid State and Materials Research, IFW Dresden, Dresden, Germany.
Npj Spintron. 2024;2(1):45. doi: 10.1038/s44306-024-00046-z. Epub 2024 Aug 13.
Recently, MnTe was established as an altermagnetic material that hosts spin-polarized electronic bands as well as anomalous transport effects like the anomalous Hall effect. In addition to these effects arising from altermagnetism, MnTe also hosts other magnetoresistance effects. Here, we study the manipulation of the magnetic order by an applied magnetic field and its impact on the electrical resistivity. In particular, we establish which components of anisotropic magnetoresistance are present when the magnetic order is rotated within the hexagonal basal plane. Our experimental results, which are in agreement with our symmetry analysis of the magnetotransport components, showcase the existence of an anisotropic magnetoresistance linked to both the relative orientation of current and magnetic order, as well as crystal and magnetic order. Altermagnetism is manifested as a three-fold component in the transverse magnetoresistance which arises due to the anomalous Hall effect.
最近，碲化锰被确立为一种交替磁性材料，它拥有自旋极化电子能带以及诸如反常霍尔效应等反常输运效应。除了这些由交替磁性产生的效应外，碲化锰还呈现出其他磁阻效应。在此，我们研究外加磁场对磁序的操控及其对电阻率的影响。特别是，我们确定当磁序在六方基面内旋转时，各向异性磁阻的哪些分量会出现。我们的实验结果与我们对磁输运分量的对称性分析相一致，展示了与电流和磁序的相对取向以及晶体和磁序相关的各向异性磁阻的存在。交替磁性在横向磁阻中表现为三重分量，这是由反常霍尔效应引起的。
