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Página principal > Artículos > Artículos publicados > Spin communication over 30 μm long channels of chemical vapor deposited graphene on SiO2 |
Fecha: | 2019 |
Resumen: | We demonstrate a high-yield fabrication of non-local spin valve devices with room-temperature spin lifetimes of up to 3 ns and spin relaxation lengths as long as 9 μm in platinum-based chemical vapor deposition (Pt-CVD) synthesized single-layer graphene on SiO/Si substrates. The spin-lifetime systematically presents a marked minimum at the charge neutrality point, as typically observed in pristine exfoliated graphene. However, by studying the carrier density dependence beyond n ∼ 5 × 10 cm, via electrostatic gating, it is found that the spin lifetime reaches a maximum and then starts decreasing, a behavior that is reminiscent of that predicted when the spin-relaxation is driven by spin-orbit interaction. The spin lifetimes and relaxation lengths compare well with state-of-the-art results using exfoliated graphene on SiO/Si, being a factor two-to-three larger than the best values reported at room temperature using the same substrate. As a result, the spin signal can be readily measured across 30 μm long graphene channels. These observations indicate that Pt-CVD graphene is a promising material for large-scale spin-based logic-in-memory applications. |
Ayudas: | European Commission 696656 Ministerio de Economía y Competitividad MAT2013-46785-P Ministerio de Economía y Competitividad MAT2016-75952-R Ministerio de Economía y Competitividad MAT2015-68307-P Ministerio de Ciencia, Innovación y Universidades SEV-2017-0706 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-827 Ministerio de Economía y Competitividad BES-2014-069925 European Commission 665919 |
Derechos: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades. |
Lengua: | Anglès |
Documento: | Article ; recerca ; Versió acceptada per publicar |
Publicado en: | 2D Materials, Vol. 6, Num. 3 (July 2019) , p. 034003, ISSN 2053-1583 |
Postprint 20 p, 950.6 KB |