Electric charging of magnetic textures on the surface of a topological insulator

Kentaro Nomura, Naoto Nagaosa

研究成果: Article査読

104 被引用数 (Scopus)

抄録

A three-dimensional topological insulator manifests gapless surface modes, described by two-dimensional Dirac equation. We study magnetic textures, such as domain walls and vortices, in a ferromagnetic thin film deposited on a three-dimensional topological insulator. It is shown that these textures can be electrically charged, ascribed to the proximity effect with the Dirac surface states. We derive a general relation between the electric and the magnetic charges. As a physical consequence, we discuss domain-wall motion driven by an applied electric field, which promises magnetic devices with high thermal efficiency.

本文言語English
論文番号161401
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
82
16
DOI
出版ステータスPublished - 2010 10 1
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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