Toward Two-Dimensional van der Waals Magnon Transport Devices: WTe₂ Electrodes for Efficient Magnon Spin Injection and Detection.

ABSTRACT: One of the bottlenecks toward all two-dimensional material-based magnon transport devices is the absence of a two-dimensional material for the efficient injection and detection of magnon spins. Here, we demonstrate that WTe₂, a layered, nonmagnetic van der Waals material, functions as an efficient spin injector and detector for magnon spins. It enables injection and detection of spins polarized in-plane via the conventional spin Hall effect and magnon spins polarized out-of-plane through unconventional charge-to-spin interconversion mechanisms. Such dual functionality is not achievable with conventional electrodes such as platinum or permalloy in the absence of a magnetic field. Using CrPS₄, an insulating two-dimensional antiferromagnet, we employ a hybrid nonlocal de

SUBMITTER: Sundararajan K 

PROVIDER: S-EPMC12613838 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature