Effect of Underlying Bi2Se3 Surface on Magnetic Properties of Ni Films

Alviu Rey Nasir, Taehee Yoo, Seul Ki Bac, Hakjoon Lee, Sangyeop Lee, Seonghoon Choi, Sang Hoon Lee, Xinyu Liu, M. Dobrowolska, Jacek K. Furdyna

Research output: Contribution to journalArticle

Abstract

We have investigated magnetic properties of Ni film specimens deposited either on GaAs or on Bi2Se3 surfaces. The magnetization saturation field along the out-of-plane direction observed in the Hall data was weaker for the Ni/Bi2Se3 sample than for the Ni/GaAs sample. On the other hand, planar Hall resistance measurements showed the larger in-plane coercive field for Ni/Bi2Se3 than for Ni/GaAs. These changes of magnetic hardness observed along the out-of-plane and in-plane directions in the Ni/Bi2Se3 specimen are consistent with effects arising from spin-orbit interaction at the surface of the Bi2Se3 topological insulator.

Original languageEnglish
Article number7987797
JournalIEEE Transactions on Magnetics
Volume53
Issue number11
DOIs
Publication statusPublished - 2017 Nov 1

Keywords

  • Ferromagnetic (FM) films
  • magnetic anisotropy
  • planar Hall effect (PHR)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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    Nasir, A. R., Yoo, T., Bac, S. K., Lee, H., Lee, S., Choi, S., Lee, S. H., Liu, X., Dobrowolska, M., & Furdyna, J. K. (2017). Effect of Underlying Bi2Se3 Surface on Magnetic Properties of Ni Films. IEEE Transactions on Magnetics, 53(11), [7987797]. https://doi.org/10.1109/TMAG.2017.2729500