Publication result detail

Bloch-point-mediated topological transformations of magnetic domain walls in cylindrical nanowires

Wartelle, A.; Trapp, B.; Stano, M.; Thirion, C.; Bochmann, S.; Bachmann, J.; Foerster, M.; Aballe, L.; Mentos, TO.; Locatelli, A.; Sala, A.; Cagnon, L.; Toussaint, JC.; Fruchart, O.

Original Title

Bloch-point-mediated topological transformations of magnetic domain walls in cylindrical nanowires

English Title

Bloch-point-mediated topological transformations of magnetic domain walls in cylindrical nanowires

Type

WoS Article

Original Abstract

Cylindrical nanowires made of soft magnetic materials, in contrast to thin strips, host domain walls of two distinct topologies. Following 15 years of theoretical predictions of the unique dynamic features of such walls, such as absence of Walker breakdown, we report on experiments here. Unexpectedly, we evidence the dynamic transformation of topology upon wall motion above a field threshold, a phenomenon that had been previously overlooked. Micromagnetic simulations highlight the underlying phenomenon for one type of transformation, involving the nucleation of a Bloch-point singularity. This calls for reexamining existing predictions, and further experiments to highlight the conditions favoring the transformation.

English abstract

Cylindrical nanowires made of soft magnetic materials, in contrast to thin strips, host domain walls of two distinct topologies. Following 15 years of theoretical predictions of the unique dynamic features of such walls, such as absence of Walker breakdown, we report on experiments here. Unexpectedly, we evidence the dynamic transformation of topology upon wall motion above a field threshold, a phenomenon that had been previously overlooked. Micromagnetic simulations highlight the underlying phenomenon for one type of transformation, involving the nucleation of a Bloch-point singularity. This calls for reexamining existing predictions, and further experiments to highlight the conditions favoring the transformation.

Keywords

DYNAMICS; MOTION; FIELD

Key words in English

DYNAMICS; MOTION; FIELD

Authors

Wartelle, A.; Trapp, B.; Stano, M.; Thirion, C.; Bochmann, S.; Bachmann, J.; Foerster, M.; Aballe, L.; Mentos, TO.; Locatelli, A.; Sala, A.; Cagnon, L.; Toussaint, JC.; Fruchart, O.

RIV year

2020

Released

29.01.2019

Publisher

AMER PHYSICAL SOC

Location

COLLEGE PK

ISBN

2469-9950

Periodical

Physical Review B

Volume

99

Number

2

State

United States of America

Pages from

1

Pages to

6

Pages count

6

URL

https://journals.aps.org/prb/abstract/10.1103/PhysRevB.99.024433

BibTex

@article{BUT163602,
  author="Wartelle, A. and Trapp, B. and Stano, M. and Thirion, C. and Bochmann, S. and Bachmann, J. and Foerster, M. and Aballe, L. and Mentos, TO. and Locatelli, A. and Sala, A. and Cagnon, L. and Toussaint, JC. and Fruchart, O.",
  title="Bloch-point-mediated topological transformations of magnetic domain walls in cylindrical nanowires",
  journal="Physical Review B",
  year="2019",
  volume="99",
  number="2",
  pages="1--6",
  doi="10.1103/PhysRevB.99.024433",
  issn="2469-9950",
  url="https://journals.aps.org/prb/abstract/10.1103/PhysRevB.99.024433"
}