Spin currents with unusual spin orientations in noncollinear Weyl antiferromagnetic Mn3Sn
Date
2023-03-10
Journal Title
Journal ISSN
Volume Title
Publisher
Physical Review Materials
Abstract
There are intensive efforts to search for mechanisms that lead to spin-orbit torque with unusual spin orientation, particularly out-of-plane spin orientation which can efficiently switch perpendicular magnetizations. Such a phenomenon has been observed in materials with low structural symmetry, ferromagnetic materials, and antiferromagnets with noncollinear spin structures. Here, we demonstrate the observation of, in addition to out-of-plane spin orientation, spin orientation along the charge current direction in Mn3Sn, a noncollinear antiferromagnet and Weyl semimetal. The mechanism arises from noncollinear spin structure with spin-orbit coupling and it can be viewed as spin rotation around the octupole moment, the lowest order of cluster multipole moment pertaining to the
Mn3Sn crystal group.
Description
This article was originally published in Physical Review Materials. The version of record is available at: https://doi.org/10.1103/PhysRevMaterials.7.034404
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Citation
Wang, Xinhao, Mohammad Tomal Hossain, T. R. Thapaliya, Durga Khadka, Sergi Lendinez, Hang Chen, Matthew F. Doty, et al. “Spin Currents with Unusual Spin Orientations in Noncollinear Weyl Antiferromagnetic Mn3Sn.” Phys. Rev. Mater. 7, no. 3 (March 2023): 034404. https://doi.org/10.1103/PhysRevMaterials.7.034404.