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Effect of Underlying Bi2Se3 Surface on Magnetic Properties of Ni Films
- Authors
- Nasir, Alviu Rey; Yoo, Taehee; Bac, Seul-Ki; Lee, Hakjoon; Lee, Sangyeop; Choi, Seonghoon; Lee, Sanghoon; Liu, Xinyu; Dobrowolska, M.; Furdyna, Jacek K.
- Issue Date
- 11월-2017
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Ferromagnetic (FM) films; magnetic anisotropy; planar Hall effect (PHR)
- Citation
- IEEE TRANSACTIONS ON MAGNETICS, v.53, no.11
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE TRANSACTIONS ON MAGNETICS
- Volume
- 53
- Number
- 11
- ISSN
- 0018-9464
- 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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