Exchange bias driven by Dzyaloshinskii-Moriya interactions

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

Research output: Contribution to journalArticle

31 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

Fingerprint

coercivity
hysteresis
interactions
tuning
augmentation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Exchange bias driven by Dzyaloshinskii-Moriya interactions. / Yanes, R.; Jackson, J.; Udvardi, L.; Szunyogh, L.; Nowak, U.

In: Physical Review Letters, Vol. 111, No. 21, 217202, 20.11.2013.

Research output: Contribution to journalArticle

@article{ec44f1bc0627492488d96ce0af4d2652,
title = "Exchange bias driven by Dzyaloshinskii-Moriya interactions",
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.",
author = "R. Yanes and J. Jackson and L. Udvardi and L. Szunyogh and U. Nowak",
year = "2013",
month = "11",
day = "20",
doi = "10.1103/PhysRevLett.111.217202",
language = "English",
volume = "111",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "21",

}

TY - JOUR

T1 - Exchange bias driven by Dzyaloshinskii-Moriya interactions

AU - Yanes, R.

AU - Jackson, J.

AU - Udvardi, L.

AU - Szunyogh, L.

AU - Nowak, U.

PY - 2013/11/20

Y1 - 2013/11/20

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=84888108987&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84888108987&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.111.217202

DO - 10.1103/PhysRevLett.111.217202

M3 - Article

AN - SCOPUS:84888108987

VL - 111

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 21

M1 - 217202

ER -