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22 UEC Int’l Mini-Conference No.54

Electron transport properties of SiC nanoribbons under different

spin configurations

*
Muhammad HASSAN , Jun NAKAMURA
Department of Engineering Science,
The University of Electro-Communications, Tokyo.

Key words: Non-equilibrium Greens Function (NEGF), SiC nanoribbons, quantum conductance

1.Introduction 4. Results
Spintronic properties of graphene as a two-dimensional
(2D) material have garnered a lot of interest lately. However,
the zero-band gap of graphene has limited its use across
several device applications [1-2]. Thus, the family of 2D-
electronic materials may be enhanced by 2D graphene-like
materials, such as IV group semiconductors (SiC, SiGe,
GeC, SnC, SnSi, GeSn) that have a wide enough band gap
[3]. When SiC sheets are sliced, SiC nanoribbons are

created, much like graphene nanoribbons. The zigzag
arrangement of SiC nanoribbons is attracting interest due to
its broad bandgap, mechanical durability, and magnetic edge
states, which make it a promising material for
nanoelectronics and spintronics [4].
2. Methodology

In this work, we employ first-principles calculations based
on density functional theory (DFT) combined with the non-
equilibrium Green's function (NEGF) method to investigate Fig. 2. I-Vbias curves of 6-ZGNRs with the AFM junction
the electron transport properties of zigzag SiC nanoribbons for spin-up and down electrons, respectively.
(ZSiCNRs) under different spin configurations. 5. Discussion
3. Calculation Model 6. Conclusion

References

[1] Soavi G, Wang G, Rostami H, Purdie D G, De Fazio D, Ma T,
Luo B, Wang J, Ott A K and Yoon D, “Broadband, electrically
tunable third-harmonic generation in graphene”, Nat.
Nanotechnol. 13, 583 (2018).
[2] Tuček J, Błoński P, Ugolotti J, Swain A K, Enoki T and Zbořil
R, “Emerging chemical strategies for imprinting magnetism in
graphene and related 2D materials for spintronic and biomedical
applications”, Chem. Soc. Rev. 47, 3899–990 (2018).
F Central Region [3] Avsar A, Yang T-Y, Bae S, Balakrishnan J, Volmer F, Jaiswal

M, Yi Z, Ali S R, Güntherodt G and Hong B H, “Toward wafer
scale fabrication of graphene-based spin valve devices”, Nano
Fig. 1. Hydrogen terminated 6-ZSiCNR, which has an AFM junction and Lett. 11, 2363–8 (2011).
the spatial distribution of the spin density at Vbias=0 V. The blue and
yellow colors represent spin-down up electrons, respectively
The author is supported by AiQuSci MEXT Scholarship