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Spin-Orbit Effects ...
Spin-Orbit Effects on the Dynamical Properties of Polarons in Graphene Nanoribbons
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- Ribeiro Jr, Luiz Antonio (author)
- Linköpings universitet,Teoretisk Fysik,Tekniska fakulteten,Institute of Physics, University of Brasίlia, Brasίlia, Brazil
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- da Silva, Gesiel Gomes (author)
- Institute of Physics, University of Brasίlia, Brasίlia, Brazil; Goias Federal Institute of Science and Technology, IFG, Luziânia, Brazil
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- de Sousa Jr, Rafael Timoteo (author)
- Department of Electrical Engineering, University of Brasίlia, Brasίlia, Brazil
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- de Almeida Fonseca, Antonio Luciano (author)
- Institute of Physics, University of Brasίlia, Brasίlia, Brazil
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- da Cunha, Wiliam Ferreira (author)
- Institute of Physics, University of Brasίlia, Brasίlia, Brazil
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- Magela e Silva, Geraldo (author)
- Institute of Physics, University of Brasίlia, Brasίlia, Brazil
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(creator_code:org_t)
- 2018-01-30
- 2018
- English.
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In: Scientific Reports. - : Nature Publishing Group. - 2045-2322. ; 8
- Related links:
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https://liu.diva-por... (primary) (Raw object)
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https://www.nature.c...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The dynamical properties of polarons in armchair graphene nanoribbons (GNR) is numerically investigated in the framework of a two-dimensional tight-binding model that considers spin-orbit (SO) coupling and electron-lattice (e-l) interactions. Within this physical picture, novel polaron properties with no counterparts to results obtained from conventional tight-binding models are obtained. Our findings show that, depending on the systems width, the presence of SO coupling changes the polarons charge localization giving rise to different degrees of stability for the charge carrier. For instance, the joint action of SO coupling and e-l interactions could promote a slight increase on the charge concentration in the center of the lattice deformation associated to the polaron. As a straightforward consequence, this process of increasing stability would lead to a depreciation in the polarons motion by decreasing its saturation velocity. Our finds are in good agreement with recent experimental investigations for the charge localization in GNR, mostly when it comes to the influence of SO coupling. Moreover, the contributions reported here provide a reliable method for future works to evaluate spin-orbit influence on the performance of graphene nanoribbons.
Subject headings
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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