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Spin caloritronics in a graphene-antimonene heterostructure with high figure of merit: a first principle study

Hashemi, S ; Sharif University of Technology | 2023

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  1. Type of Document: Article
  2. DOI: 10.1007/s10825-022-01972-z
  3. Publisher: Springer , 2023
  4. Abstract:
  5. In this paper, thermally induced spin current in graphene-antimonene heterostructure is investigated using first-principle density functional theory (DFT) combined with the non-equilibrium Green’s function (NEGF) method. We obtain a higher spin current in the graphene-antimonene heterostructure (Gr-Sb) than in the graphene zigzag nanoribbon (GrZNR). The current versus source temperature shows negative differential behavior. Also, the results show that graphene-antimonene heterostructure's figure of merit coefficient could be ZT = 37 ×10 - 3 in the energy range – 0.5 eV < E < 0.5 eV, while its value for monolayer graphene is about 4000 times less. These results show that the figure of merit ZT can be increased in the heterostructure of graphene-antimonene; thus, it can be selected as a platform for high-performance thermoelectric technology. © 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature
  6. Keywords:
  7. Graphene-antimonene ; Heterostructure ; Negative differential behavior ; Spin caloritronics ; Spintronics
  8. Source: Journal of Computational Electronics ; Volume 22, Issue 1 , 2023 , Pages 80-87 ; 15698025 (ISSN)
  9. URL: https://link.springer.com/article/10.1007/s10825-022-01972-z