Antiferromagnetic semimetal terahertz photodetectors enhanced through weak localization.

ABSTRACT: Effective detection is critical for terahertz applications, yet it remains hindered by the unclear mechanisms that necessitate a deeper understanding of photosensitive materials with exotic physical phenomena. Here, we investigate the terahertz detection capabilities of the two-dimensional antiferromagnetic semimetal NbFeTe₂. Our study reveals that the interaction between antiferromagnetic magnetic moments and electron spin induces disordered carriers to hop between localized states, resulting in a nonlinear increase in responsivity as temperature decreases. We integrate asymmetric electrodes to generate a sufficient Seebeck potential, enabling carriers to overcome the barrier of localized states and achieve reordering at room temperature. Additionally, the self-powered performa

SUBMITTER: Wang D 

PROVIDER: S-EPMC11696399 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature