Skip to content
DraconiticResearch
Search Sources API
203,234 studies31 sourcesUpdated 44 min ago
PreprintarXiv licencearXiv

Ferromagnetic Bloch Line as a Bead on a String

  • Jake Hoffmann
  • Oleg Tchernyshyov
Open at sourcePDFDOICite

Abstract

We present a simple model of a Bloch line in a thin-film ferromagnet with strong easy-axis and intermediate in-plane anisotropies. The meron is represented as a charged, massless particle that slides along the linear domain wall in a background magnetic field- a gyroscopic bead on a string. Its gyroscopic behavior dynamically isolates the wall segments on either side of the meron, motivating the model for a Bloch line as two strings joined at a moving boundary. The meron clamps the wall at this junction, completely reflecting low-amplitude spin waves that propagate along it. Out-of-plane and in-plane magnetic fields and spin-transfer torques then act in two ways: by exerting a force on the Bloch line itself, or by driving the wall as a whole. Predictions of this model are in agreement with numerical simulations.

Related

  1. Newton's Identity in Finite-Bead Fermionic Partition Function
    A. Chaudhary, J. Valenzuela
    arXivPreprintarXiv licenceFull textComputational physicsStatistical & nonlinear physicsarXiv
  2. Inertia-Driven Information Flow and Symmetry Breaking in a Nonequilibrium Two-Bead System
    Jetin E. Thomas, Ramandeep S. Johal
    arXivPreprintCC BY 4.0Full textStatistical & nonlinear physicsarXiv
  3. Single-and Multi-bead Coarse-grained Form Factors for SAXS Calculations
    Isabel Vinterbladh, Rémi Vuillemot, Sergei Grudinin +1
    HALPreprintCC BY 4.0Full textGeneral chemistryBiological & medical physicsHAL
  4. Kinetic temperatures and inertial effects in a nonequilibrium bead-spring model
    Jetin E Thomas, Ramandeep S. Johal
    arXivPreprintCC BY 4.0Full textStatistical & nonlinear physicsarXiv
  5. Confinement in the three-state Potts quantum spin chain in extreme ferromagnetic limit
    Anna Krasznai, Sergei Rutkevich, Gábor Takács
    SciPostPeer-reviewedCC BY 4.0General physicsSciPost

Cite

BibTeXRIS
BibTeX
@misc{hoffmann2026ferromagnetic,
  title = {{Ferromagnetic Bloch Line as a Bead on a String}},
  author = {Jake Hoffmann and Oleg Tchernyshyov},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.05859},
  eprint = {2610.05859},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.05859},
}
RIS
TY  - UNPB
TI  - Ferromagnetic Bloch Line as a Bead on a String
AU  - Jake Hoffmann
AU  - Oleg Tchernyshyov
PY  - 2026
DA  - 2026/10/05
PB  - arXiv
DO  - 10.48550/arxiv.2610.05859
UR  - https://arxiv.org/abs/2610.05859
AB  - We present a simple model of a Bloch line in a thin-film ferromagnet with strong easy-axis and intermediate in-plane anisotropies. The meron is represented as a charged, massless particle that slides along the linear domain wall in a background magnetic field- a gyroscopic bead on a string. Its gyroscopic behavior dynamically isolates the wall segments on either side of the meron, motivating the model for a Bloch line as two strings joined at a moving boundary. The meron clamps the wall at this junction, completely reflecting low-amplitude spin waves that propagate along it. Out-of-plane and in-plane magnetic fields and spin-transfer torques then act in two ways: by exerting a force on the Bloch line itself, or by driving the wall as a whole. Predictions of this model are in agreement with numerical simulations.
ER  -