Exchange bias driven by Dzyaloshinskii-Moriya interactions

R. Yanes, J. Jackson, L. Udvardi, L. Szunyogh, U. Nowak

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

The exchange bias effect in a compensated IrMn3/Co(111) system is studied using multiscale modeling from ab initio to atomistic spin model calculations. We evaluate numerically the out-of-plane hysteresis loops of the bilayer for different thicknesses of the ferromagnetic layer. The results show the existence of a perpendicular exchange bias and an enhancement of the coercivity of the system. To identify the origin of the exchange bias, we analyze the hysteresis loops of a selected bilayer by tuning the different contributions to the exchange interaction across the interface. Our results indicate that the exchange bias is primarily induced by Dzyaloshinskii-Moriya interactions, while the coercivity is increased mainly due to a spin-flop mechanism.

Original languageEnglish
Article number217202
JournalPhysical review letters
Volume111
Issue number21
DOIs
Publication statusPublished - Nov 20 2013

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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