Tunable Photoresponse in a Two-Dimensional Superconducting Heterostructure.

ABSTRACT: The photo-induced superconducting phase transition is widely used in probing the physical properties of correlated electronic systems and to realize broadband photodetection with extremely high responsivity. However, such photoresponse is usually insensitive to electrostatic doping due to the high carrier density of the superconductor, restricting its applications in tunable optoelectronic devices. In this work, we demonstrate the gate voltage modulation to the photoresponsivity in a two-dimensional NbSe₂-graphene heterojunction. The superconducting critical current of the NbSe₂ relies on the gate-dependent hot carrier generation in graphene via the Joule heating effect, leading to the observed shift of both the magnitude and peak position of the photoresponsivity spe

SUBMITTER: Ji Z 

PROVIDER: S-EPMC9920438 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature