Creep of chiral domain walls

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademic

35 Downloads (Pure)

Uittreksel

Recent experimental studies of magnetic domain expansion under easy-axis drive fields in materials with a perpendicular magnetic anisotropy have shown that the domain wall velocity is asymmetric as a function of an external in plane magnetic field. This is understood as a consequence of the inversion asymmetry of the system, yielding a finite chiral Dzyaloshinskii-Moriya interaction. Numerous attempts have been made to explain these observations using creep theory, but, in doing so, these have not included all contributions to the domain wall energy or have introduced additional free parameters. In this article we present a theory for creep motion of chiral domain walls in the creep regime that includes the most important contributions to the domain-wall energy and does not introduce new free parameters beyond the usual parameters that are included in the micromagnetic energy. Furthermore, we present experimental measurements of domain wall velocities as a function of in-plane field that are well decribed by our model, and from which material properties such as the strength of the Dzyaloshinskii-Moriya interaction and the demagnetization field are extracted.
Originele taal-2Engels
Artikelnummer1812.09055v1
Aantal pagina's22
TijdschriftarXiv.org, e-Print Archive, Physics
StatusGepubliceerd - 21 dec 2018

Vingerafdruk

domain wall
demagnetization
magnetic domains
energy
asymmetry
interactions
inversions
anisotropy
expansion
magnetic fields

Bibliografische nota

6 pages, 4 figures, Supplemental Material (15 pages, 9 figures)

Citeer dit

@article{fa0b057fc35a4b839e3faed08a99979d,
title = "Creep of chiral domain walls",
abstract = "Recent experimental studies of magnetic domain expansion under easy-axis drive fields in materials with a perpendicular magnetic anisotropy have shown that the domain wall velocity is asymmetric as a function of an external in plane magnetic field. This is understood as a consequence of the inversion asymmetry of the system, yielding a finite chiral Dzyaloshinskii-Moriya interaction. Numerous attempts have been made to explain these observations using creep theory, but, in doing so, these have not included all contributions to the domain wall energy or have introduced additional free parameters. In this article we present a theory for creep motion of chiral domain walls in the creep regime that includes the most important contributions to the domain-wall energy and does not introduce new free parameters beyond the usual parameters that are included in the micromagnetic energy. Furthermore, we present experimental measurements of domain wall velocities as a function of in-plane field that are well decribed by our model, and from which material properties such as the strength of the Dzyaloshinskii-Moriya interaction and the demagnetization field are extracted.",
keywords = "cond-mat.mes-hall, cond-mat.mtrl-sci",
author = "Hartmann, {Dion M. F.} and Duine, {Rembert A.} and Meijer, {Mari{\"e}lle J.} and Swagten, {Henk J. M.} and Reinoud Lavrijsen",
note = "6 pages, 4 figures, Supplemental Material (15 pages, 9 figures)",
year = "2018",
month = "12",
day = "21",
language = "English",
journal = "arXiv.org, e-Print Archive, Physics",

}

Creep of chiral domain walls. / Hartmann, Dion M. F.; Duine, Rembert A.; Meijer, Mariëlle J.; Swagten, Henk J. M.; Lavrijsen, Reinoud.

In: arXiv.org, e-Print Archive, Physics, 21.12.2018.

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademic

TY - JOUR

T1 - Creep of chiral domain walls

AU - Hartmann, Dion M. F.

AU - Duine, Rembert A.

AU - Meijer, Mariëlle J.

AU - Swagten, Henk J. M.

AU - Lavrijsen, Reinoud

N1 - 6 pages, 4 figures, Supplemental Material (15 pages, 9 figures)

PY - 2018/12/21

Y1 - 2018/12/21

N2 - Recent experimental studies of magnetic domain expansion under easy-axis drive fields in materials with a perpendicular magnetic anisotropy have shown that the domain wall velocity is asymmetric as a function of an external in plane magnetic field. This is understood as a consequence of the inversion asymmetry of the system, yielding a finite chiral Dzyaloshinskii-Moriya interaction. Numerous attempts have been made to explain these observations using creep theory, but, in doing so, these have not included all contributions to the domain wall energy or have introduced additional free parameters. In this article we present a theory for creep motion of chiral domain walls in the creep regime that includes the most important contributions to the domain-wall energy and does not introduce new free parameters beyond the usual parameters that are included in the micromagnetic energy. Furthermore, we present experimental measurements of domain wall velocities as a function of in-plane field that are well decribed by our model, and from which material properties such as the strength of the Dzyaloshinskii-Moriya interaction and the demagnetization field are extracted.

AB - Recent experimental studies of magnetic domain expansion under easy-axis drive fields in materials with a perpendicular magnetic anisotropy have shown that the domain wall velocity is asymmetric as a function of an external in plane magnetic field. This is understood as a consequence of the inversion asymmetry of the system, yielding a finite chiral Dzyaloshinskii-Moriya interaction. Numerous attempts have been made to explain these observations using creep theory, but, in doing so, these have not included all contributions to the domain wall energy or have introduced additional free parameters. In this article we present a theory for creep motion of chiral domain walls in the creep regime that includes the most important contributions to the domain-wall energy and does not introduce new free parameters beyond the usual parameters that are included in the micromagnetic energy. Furthermore, we present experimental measurements of domain wall velocities as a function of in-plane field that are well decribed by our model, and from which material properties such as the strength of the Dzyaloshinskii-Moriya interaction and the demagnetization field are extracted.

KW - cond-mat.mes-hall

KW - cond-mat.mtrl-sci

M3 - Article

JO - arXiv.org, e-Print Archive, Physics

JF - arXiv.org, e-Print Archive, Physics

M1 - 1812.09055v1

ER -