Simon, E., Yanes, R., Khmelevskyi, S., Palotás, K., Szunyogh, L., & Nowak, U. (2018). Magnetism and exchange-bias effect at the MnN/Fe interface. Physical Review B, 98, Article 094415. https://doi.org/10.1103/physrevb.98.094415
E134-01 - Forschungsbereich Applied and Computational Physics
-
Journal:
Physical Review B
-
ISSN:
2469-9950
-
Date (published):
2018
-
Number of Pages:
8
-
Peer reviewed:
Yes
-
Keywords:
Magnetism
en
Abstract:
Based on ab initio calculations and spin dynamics simulations, we perform a detailed study on the magnetic
properties of bulk MnN and the MnN/Fe interface. We determine the spin model parameters for the θ-phase of
bulk MnN, and we find that the competition between the nearest and the next-nearest-neighbor interactions leads
to antiferromagnetic ordering of the Mn spins, in agreement with previous theoretical and experimental results.
At the MnN/Fe interface, a sizable Dzyaloshinskii-Moriya interaction appears leading to a stable exchange-bias
effect. We study the dependences of the exchange-bias effect on the thicknesses of the ferromagnetic and the
antiferromagnetic layers, and we compare them to experimentally obtained results [Meinert et al., Phys. Rev. B 92, 144408 (2015)].
