Effect of surface roughness on the anomalous Hall effect in Fe thin films

Qiang Zhang, Dongxing Zheng, Yan Wen, Yuelei Zhao, Wenbo Mi, Aurelien Manchon, Olivier Boulle, Xixiang Zhang

Research output: Contribution to journalArticle

Abstract

Surface roughness plays an important role on the magnetotransport properties of thin films, especially in ultrathin films. In this work, we prepared Fe thin films with various surface roughness by using different seed layers and studied the electrical transport and anomalous Hall effect. By tuning surface roughness scattering, the longitudinal resistivity (ρxx) measured at 5 K increases by one order of magnitude and the corresponding anomalous Hall resistivity (ρAHE) increases by three times with increasing roughness. The intrinsic, skew-scattering, and side-jump contributions to ρAHE were separated from our data. The anomalous Hall angle depends on the surface roughness, which may be of importance to the material engineering for achieving large spin Hall angle.

Original languageEnglish (US)
Article number134412
JournalPhysical Review B
Volume101
Issue number13
DOIs
StatePublished - Apr 1 2020

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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  • Cite this

    Zhang, Q., Zheng, D., Wen, Y., Zhao, Y., Mi, W., Manchon, A., Boulle, O., & Zhang, X. (2020). Effect of surface roughness on the anomalous Hall effect in Fe thin films. Physical Review B, 101(13), [134412]. https://doi.org/10.1103/PhysRevB.101.134412