Emergence of topological Hall effect from fanlike spin structure as modified by Dzyaloshinsky-Moriya interaction in MnP

Y. Shiomi, S. Iguchi, Y. Tokura

研究成果: Article査読

25 被引用数 (Scopus)

抄録

A nontrivial Hall effect has been observed as an anomaly of the Hall conductivity in the magnetization process in a typical itinerant helimagnet MnP. Since the Dzyaloshinsky-Moriya interaction slightly modulates the spin structure, the anomaly is identified only in the specific magnetic (fanlike) phase that can have finite scalar spin chirality. The decrease in the magnitude of the anomaly as observed by doping Co is well accounted for in terms of the topological Hall effect arising from the spin-chirality-induced Berry phase in real space. A fictitious magnetic flux in real space is estimated to be ∼1 T, which is consistent with the small modulation of the spin structure.

本文言語English
論文番号180404
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
86
18
DOI
出版ステータスPublished - 2012 11 15

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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