Light-induced current in Cooper pair insulators in NbTiN films.

ABSTRACT: The usual macroscopic Cooper pairs systems, the superconductors, very weakly interact with the visible light since self-existing superconducting currents screen the light penetration into the samples. However, the superinsulators whose superinsulating behavior is caused by localization of Cooper pairs demonstrate significant interaction with light. As a result, superinsulating films, in particular, the NbTiN films, offer a remarkable and unique platform for constructing high sensitivity light detector working at superlow millikelvin temperatures. Irradiating the NbTiN film with a visible light when the film is in the insulating state results in the emergence of a measurable current through this NbTiN-based insulator. It was found that this light-induced current depends on the radiation int

SUBMITTER: Mironov A 

PROVIDER: S-EPMC12635109 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature