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Spin hall effect and weak antilocalization in graphene/transition metal dichalcogenide heterostructures

AuthorsGarcía, J. H.; Cummings, Aron W.; Roche, Stephan
Issue Date2017
Citation1st Workshop Spain-Taiwan: "2D Materials and Interfaces for Spintronics" (2017)
AbstractSince its discovery, graphene has been a promising material for spintronics: its low spin-orbit coupling, negligible hyperfine interaction, and high electron mobility, allow it to transport spin unaltered over long distances. However, the properties needed for such outstanding transport also prevent it from being useful for active spintronics, where strong spin-orbit coupling is needed to create and manipulate spin currents. In previous experimental studies, researchers have found evidences suggesting that spin-orbit coupling (SOC) can be enhanced by combining graphene with transition metal dichalcogenides. These observations were also supported by a theoretical prediction, where they show that these heterostructures present different types of spin-orbit interactions, a necessary prerequisite for the observation of spin Hall Effect and Weak Antilocalization. Using numerical simulations, we predict that measurable spin Hall Effect and Weak Antilocalization is possible in these heterostructures. Additionally, we explored the robustness of these effects against different types of disorder, founding an unexpected dependence with intervalley scattering. Finally we propose experimental guidelines for the observation of both effects.
DescriptionResumen del trabajo presentado al 1st Workshop Spain-Taiwan: "2D Materials and Interfaces for Spintronics", celebrado en Barcelona (España) del 23 al 25 de octubre de 2017.
Appears in Collections:(CIN2) Comunicaciones congresos
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