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; Sanghoon Lee; Xinyu Liu; M. Dobrowolska; Jacek K. Furdyna

doi:10.1109/TMAG.2017.2729500

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, Sanghoon Lee, Xinyu Liu, M. Dobrowolska, Jacek K. Furdyna

Department of Physics

Research output: Contribution to journal › Article › peer-review

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 language	English
Article number	7987797
Journal	IEEE Transactions on Magnetics
Volume	53
Issue number	11
DOIs	https://doi.org/10.1109/TMAG.2017.2729500
Publication status	Published - 2017 Nov

Bibliographical note

Publisher Copyright:
© 1965-2012 IEEE.

Keywords

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

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

Access to Document

10.1109/TMAG.2017.2729500

Cite this

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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.",

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AU - Nasir, Alviu Rey

AU - Yoo, Taehee

AU - Bac, Seul Ki

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AU - Lee, Sangyeop

AU - Choi, Seonghoon

AU - Lee, Sanghoon

AU - Liu, Xinyu

AU - Dobrowolska, M.

AU - Furdyna, Jacek K.

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