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Spin-polarized electric current in silicene nanoribbons induced by atomic adsorption
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Núñez Ramírez, C. D. (César Daniel), Orellana, P. A., Rosales, L., Römer, Rudolf A. and Domínguez-Adame, Francisco (2017) Spin-polarized electric current in silicene nanoribbons induced by atomic adsorption. Physical Review B (Condensed Matter and Materials Physics), 96 (4). 045403 . doi:10.1103/PhysRevB.96.045403
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WRAP-Spin-polarized-current-nanoribbons-induced-atomic-adsorption-Nunez-2017.pdf - Accepted Version - Requires a PDF viewer. Download (888Kb) | Preview |
Official URL: http://dx.doi.org/10.1103/PhysRevB.96.045403
Abstract
We investigate the nonequilibrium transport properties of a silicene armchair nanoribbon with a random distribution of adsorbed atoms in apex positions. A ferromagnetic insulator grown below the nanoribbon splits spin-up and spin-down electron bands and gives rise to a spin polarization of the conductance. The conductance vanishes when the Fermi energy matches the adatom levels due to the coupling of adatom localized states with the continuum spectra of the nanoribbon. This is the well-known Fano effect, resulting in a spin-dependent antiresonance in the conductance. The different antiresonance energies of spin-up and spin-down electrons give rise to a full spin polarization of the conductance in a broad energy window. This spin-dependent Fano effect opens the possibility to using it in spintronics as a tuneable source of polarized electrons.
| Item Type: | Journal Article | ||||||
|---|---|---|---|---|---|---|---|
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering | ||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||
| Library of Congress Subject Headings (LCSH): | Spintronics, Ferromagnetism, Nanotechnology | ||||||
| Journal or Publication Title: | Physical Review B (Condensed Matter and Materials Physics) | ||||||
| Publisher: | American Physical Society | ||||||
| ISSN: | 1098-0121 | ||||||
| Official Date: | 6 July 2017 | ||||||
| Dates: |
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| Volume: | 96 | ||||||
| Number: | 4 | ||||||
| Article Number: | 045403 | ||||||
| DOI: | 10.1103/PhysRevB.96.045403 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||
| Funder: | Spain. Ministerio de Economía y Competitividad [Ministry of Economy and Competitiveness] (MINECO), Fondo Nacional de Desarrollo Científico y Tecnológico (Chile) (FONDECYT), Chile. Comisión Nacional de Investigación Científica y Tecnológica (CONICYT), Universidad técnica Federico Santa María. | ||||||
| Grant number: | MAT2013-46308, MAT2016-75955 (MINECO), 1140388, 1140571 (FONDECYT) |
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