Year: 2025
Type: article
Abstract: The bulk photogalvanic effect generates direct electrical current from incident light. Here, the authors demonstrate that a bilayer graphene film with an imprinted electric superlattice potential can produce a large and tunable photogalvanic current that surpasses previous predictions for twisted bilayer graphene. This response occurs in the far-infrared regime and it can be electrically controlled by tuning both the displacement field and the superlattice moir\'e potential strength, opening new pathways for applications including infrared sensors and detectors.
DOI: 10.1103/3npr-fqt1
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
Funders: National Science Foundation, Alexander von Humboldt-Stiftung, Northeastern University, Ministry of Education, Culture, Sports, Science and Technology, Japan Society for the Promotion of Science, S. N. Bose National Centre for Basic Sciences, Air Force Office of Scientific Research, Massachusetts Technology Collaborative
OpenAlex ID: W4417154122