| Autor: |
Caetano RA; Departamento de Física, Universidade Federal do Paraná, Caixa Postal 19044, 81531-990, Curitiba, PR, Brazil. |
| Jazyk: |
angličtina |
| Zdroj: |
Scientific reports [Sci Rep] 2016 Mar 24; Vol. 6, pp. 23452. Date of Electronic Publication: 2016 Mar 24. |
| DOI: |
10.1038/srep23452 |
| Abstrakt: |
The use of organic materials in spintronic devices has been seriously considered after recent experimental works have shown unexpected spin-dependent electrical properties. The basis for the confection of any spintronic device is ability of selecting the appropriated spin polarization. In this direction, DNA has been pointed out as a potential candidate for spin selection due to the spin-orbit coupling originating from the electric field generated by accumulated electrical charges along the helix. Here, we demonstrate that spin-orbit coupling is the minimum ingredient necessary to promote a spatial spin separation and the generation of spin-current. We show that the up and down spin components have different velocities that give rise to a spin-current. By using a simple situation where spin-orbit coupling is present, we provide qualitative justifications to our results that clearly point to helicoidal molecules as serious candidates to integrate spintronic devices. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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