Skyrmion-induced anomalous Hall conductivity on topological insulator surfaces

2017/04/30 by Yasufumi Araki, Kentaro Nomura · 21 citations
Materials Science · Physics and Astronomy · #Condensed matter physics #Electrical resistivity and conductivity #Electron #Graphene research and applications #Hall effect #Insulator (electricity) #Physics #Quantum and electron transport phenomena #Quantum mechanics #Skyrmion #Topological Materials and Phenomena #Topological insulator #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevb.96.165303

published in Physical review. B./Physical review. B 96(16) (American Physical Society) · 10 pages, 4 figures; published version

openalex publication_date 2017/10/10 · arxiv created 2017/10/12 · arxiv updated 2017/10/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06

Abstract

Electron-spin momentum locking together with background magnetic textures can significantly alter the electron transport properties. We investigate theoretically the electron transport at the interface between a topological insulator and a magnetic insulator with magnetic skyrmions on the top. In contrast to the conventional topological Hall effect in normal metals, the skyrmions yield an additional contribution to the anomalous Hall conductivity even in the absence of in-plane magnetic texture, arising from the phase factor characteristic of Dirac electrons acquired at the skyrmion boundary.

Citations

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