Realizing a topological diode effect on the surface of a topological Kondo insulator.

ABSTRACT: Introducing the concept of topology into material science has sparked a revolution from classic electronic and optoelectronic devices to topological quantum devices. The latter has potential for transferring energy and information with unprecedented efficiency. Here, we demonstrate a topological diode effect on the surface of a three-dimensional material, SmB[Formula: see text], a candidate topological Kondo insulator. The diode effect is evidenced by pronounced rectification and photogalvanic effects under electromagnetic modulation and radiation at radio frequency. Our experimental results and modeling suggest that these prominent effects are intimately tied to the spatially inhomogeneous formation of topological surface states (TSS) at the intermediate temperature. This work provides a

SUBMITTER: Zhang J 

PROVIDER: S-EPMC11962496 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature