Tunable Spin Injection in High-Quality Graphene with One-Dimensional Contacts.

ABSTRACT: Spintronics involves the development of low-dimensional electronic systems with potential use in quantum-based computation. In graphene, there has been significant progress in improving spin transport characteristics by encapsulation and reducing impurities, but the influence of standard two-dimensional (2D) tunnel contacts, via pinholes and doping of the graphene channel, remains difficult to eliminate. Here, we report the observation of spin injection and tunable spin signal in fully encapsulated graphene, enabled by van der Waals heterostructures with one-dimensional (1D) contacts. This architecture prevents significant doping from the contacts, enabling high-quality graphene channels, currently with mobilities up to 130 000 cm² V^-1 s^-1 and spin diffusio

SUBMITTER: Guarochico-Moreira VH 

PROVIDER: S-EPMC9098166 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature