Exchange Bias Driven by Dzyaloshinskii-Moriya Interactions

Yanes Díaz, Rocio; Jackson, J.; Udvardi, László; Szunyogh, László; Nowak, Ulrich

Exchange Bias Driven by Dzyaloshinskii-Moriya Interactions

Files

Yanes_267713.pdf(458.75 KB)

Date

2013

Authors

Yanes Díaz, Rocio

Jackson, J.

Udvardi, László

Szunyogh, László

Nowak, Ulrich

EU project number

604398
281043

Project

HARFIR- Heusler Alloy Replacement for Iridium
FEMTOSPIN - Multiscale Modelling of Femtosecond Spin Dynamics

Collections

Physik

Publication type

Journal article

Published in

Physical Review Letters ; 111 (2013), 21. - ISSN 0031-9007. - eISSN 1079-7114

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.

Subject (DDC)

530 Physics

Keywords

exchange,bias,Dzyaloshinskii-Moriya,interactions

Cite This

ISO 690

YANES DÍAZ, Rocio, J. JACKSON, László UDVARDI, László SZUNYOGH, Ulrich NOWAK, 2013. Exchange Bias Driven by Dzyaloshinskii-Moriya Interactions. In: Physical Review Letters. 111(21). ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.111.217202

BibTex

@article{YanesDiaz2013Excha-26771,
  year={2013},
  doi={10.1103/PhysRevLett.111.217202},
  title={Exchange Bias Driven by Dzyaloshinskii-Moriya Interactions},
  number={21},
  volume={111},
  issn={0031-9007},
  journal={Physical Review Letters},
  author={Yanes Díaz, Rocio and Jackson, J. and Udvardi, László and Szunyogh, László and Nowak, Ulrich}
}

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Bibliography of Konstanz

Yes