Theoretical Foundation of Electronic Metadevices

Electronic metadevice is a new concept in which microscopic manipulation of radiofrequency fields results in extraordinary device properties. This approach can lead to a new generation of semiconductor devices that outperform their classical counterparts in terms of speed and energy efficiency. To fully unlock their potentials and to be able to design a variety of functionalities based on this new concept, a fundamental understanding of their operation principle is crucial. Using Maxwell’s equations under electrostatic assumptions, here we present a concrete theory of electronic metadevices which reveals the origin of their superior performance compared to classic devices. We show how deep-subwavelength field manipulation driven by a stripe array of metals formed on top of a heterostructure, can modify macroscopic device properties. By establishing this theoretical framework, our work lays the foundation for future implementations of electronic metadevices, opening up avenues for ultrafast electronics, including 5G and 6G telecommunications.