Spin-orbit torque in two-dimensional antiferromagnetic topological insulators
Type
ArticleAuthors
Ghosh, SumitManchon, Aurelien

KAUST Department
Material Science and Engineering ProgramPhysical Science and Engineering (PSE) Division
Spintronics Theory Group
KAUST Grant Number
OSR-2015- CRG4-2626Date
2017-01-23Permanent link to this record
http://hdl.handle.net/10754/622846
Metadata
Show full item recordAbstract
We investigate spin transport in two-dimensional ferromagnetic (FTI) and antiferromagnetic (AFTI) topological insulators. In the presence of an in-plane magnetization AFTI supports zero energy modes, which enables topologically protected edge conduction at low energy. We address the nature of current-driven spin torque in these structures and study the impact of spin-independent disorder. Interestingly, upon strong disorder the spin torque develops an antidamping component (i.e., even upon magnetization reversal) along the edges, which could enable current-driven manipulation of the antiferromagnetic order parameter. This antidamping torque decreases when increasing the system size and when the system enters the trivial insulator regime.Citation
Ghosh S, Manchon A (2017) Spin-orbit torque in two-dimensional antiferromagnetic topological insulators. Physical Review B 95. Available: http://dx.doi.org/10.1103/PhysRevB.95.035422.Sponsors
This work was supported by the King Abdullah University of Science and Technology (KAUST) through the Office of Sponsored Research (OSR) [Grant No. OSR-2015- CRG4-2626].Publisher
American Physical Society (APS)Journal
Physical Review BarXiv
1609.01174Additional Links
http://journals.aps.org/prb/abstract/10.1103/PhysRevB.95.035422ae974a485f413a2113503eed53cd6c53
10.1103/PhysRevB.95.035422