The exchange bias effect in compensated IrMn3/Co(111) system is studied using multiscale modeling from "ab initio" to atomistic calculations. We evaluate numerically the out-of-plane hysteresis loops of the bi-layer for different thickness of the ferromagnetic layer. The results show the existence of a perpendicular exchange bias field and an enhancement of the coercivity of the system. In order to elucidate the possible origin of the exchange bias, we analyze the hysteresis loops of a selected bi-layer by tuning the different contributions to the exchange interactions across the interface. Our results indicate that the exchange bias is primarily induced by the Dzyaloshinskii-Moriya interactions, while the coercivity is increased mainly due to a spin-flop mechanism.
@article{arxiv.1305.2308,
title = {Exchange Bias driven by Dzyaloshinskii-Moriya interactions},
author = {R. Yanes and J. Jackson and L. Udvardi and L. Szunyogh and U. Nowak},
journal= {arXiv preprint arXiv:1305.2308},
year = {2015}
}