Nanowerk November 25, 2024
Pristine graphene is potentially an ideal medium for transporting spin information. Proximity effects can also be used in graphene to generate and detect spins by acquiring spin–orbit coupling or magnetic exchange coupling. However, the development of seamless spintronic devices that are based only on proximity effects remains challenging. An international team of researchers (Spain, Belgium, France) found that a two-dimensional graphene spin valve that was enabled by proximity to the van der Waals magnet Cr2Ge2Te6. Spin precession measurements showed that graphene acquires both spin–orbit coupling and magnetic exchange coupling when interfaced with the Cr2Ge2Te6 leading to spin generation by both electrical spin injection and the spin Hall effect, while retaining spin transport. The simultaneous presence of spin–orbit coupling and magnetic exchange coupling also led to a sizeable anomalous Hall effect… read more. Open Access TECHNICAL ARTICLE
Charge-to-spin conversion in a graphene/CGT van der Waals heterostructure. Credit: Nature Electronics, 06 November 2024