Localized charge in various configurations of magnetic domain wall in a Weyl semimetal

Yasufumi Araki, Akihide Yoshida, Kentaro Nomura

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

We numerically investigate the electronic properties of magnetic domain walls formed in a Weyl semimetal. Electric charge distribution is computed from the electron wave functions, by numerically diagonalizing the Hamiltonian under several types of domain walls. We find a certain amount of electric charge localized around the domain wall, depending on the texture of the domain wall. This localized charge stems from the degeneracy of Landau states under the axial magnetic field, which corresponds to the curl in the magnetic texture. The localized charge enables one to drive the domain wall motion by applying an external electric field without injecting an electric current, which is distinct from the ordinary spin-transfer torque and is free from Joule heating.

Original languageEnglish
Article number045302
JournalPhysical Review B
Volume98
Issue number4
DOIs
Publication statusPublished - 2018 Jul 6

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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