Efficient intrinsic spin relaxation in graphene due to flexural distortions
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http://hdl.handle.net/10045/25275
Títol: | Efficient intrinsic spin relaxation in graphene due to flexural distortions |
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Autors: | Fratini, Simone | Gosálbez-Martínez, Daniel | Merodio Cámara, Pablo | Fernández-Rossier, Joaquín |
Grups d'investigació o GITE: | Grupo de Nanofísica |
Centre, Departament o Servei: | Universidad de Alicante. Departamento de Física Aplicada |
Paraules clau: | Intrinsic spin scattering mechanism | Graphene | Atomic spin-orbit interaction | Flexural distortions |
Àrees de coneixement: | Física de la Materia Condensada |
Data de publicació: | 28-de febrer-2012 |
Resum: | We propose an intrinsic spin scattering mechanism in graphene originated by the interplay of atomic spin-orbit interaction and the local curvature induced by flexural distortions of the atomic lattice. Starting from a multiorbital tight-binding Hamiltonian with spin-orbit coupling considered non-perturbatively, we derive an effective Hamiltonian for the spin scattering of the Dirac electrons due to flexural distortions. We compute the spin lifetime due to both flexural phonons and ripples and we find values in the 1-10 ns range at room temperature. The proposed mechanism dominates the spin relaxation in high mobility graphene samples and should also apply to other planar aromatic compounds. |
Patrocinadors: | This work has been financially supported by MEC-Spain (MAT07-67845, FIS2010-21883-C02-01, and CONSOLIDER CSD2007-00010) and Generalitat Valenciana (ACOMP/2010/070). |
URI: | http://hdl.handle.net/10045/25275 |
Idioma: | eng |
Tipus: | info:eu-repo/semantics/preprint |
Revisió científica: | no |
Apareix a la col·lecció: | INV - Grupo de Nanofísica - Artículos de Revistas |
Arxius per aquest ítem:
Arxiu | Descripció | Tamany | Format | |
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2012_Fratini_etal_Efficient_intrinsic_spin_relaxation.pdf | 592,72 kB | Adobe PDF | Obrir Vista prèvia | |
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