Abstract
We show that an interlayer Dzyaloshinskii-Moriya interaction in combination with nonlocal damping gives rise to unidirectional magnetic coupling. That is, the coupling between two magnetic layers - say, the left and right layer - is such that the dynamics of the left layer leads to the dynamics of the right layer, but not vice versa. We discuss the implications of this result for the magnetic susceptibility of a magnetic bilayer, electrically actuated spin-current transmission, and unidirectional spin-wave packet generation and propagation. Our results may enable a route towards spin-current and spin-wave diodes and further pave the way to design spintronic devices via reservoir engineering.
| Original language | English |
|---|---|
| Article number | 024418 |
| Journal | Physical Review B |
| Volume | 107 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 1 Jan 2023 |
Funding
It is a great pleasure to thank Mathias Kläui and Thomas Kools for discussions. H.Y.Y. acknowledges the European Union's Horizon 2020 research and innovation programme under Marie Skłodowska-Curie Grant Agreement SPINCAT No. 101018193. R.A.D. acknowledges support of the D-ITP consortium that is funded by the Dutch Ministry of Education, Culture and Science (OCW). R.A.D. has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (Grant No. 725509). This work is in part funded by the project “Black holes on a chip” with Project No. OCENW.KLEIN.502 which is financed by the Dutch Research Council (NWO).