Internship and thesis proposals
Non-linear circuit elements with voltage-biased superconductors

Domaines
Condensed matter
Low dimension physics
Quantum information theory and quantum technologies
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter

Type of internship
Expérimental
Description
The aim of this project is to probe the electric-field-induced breakdown of superconductivity in films of the alloy NbSi, which can have different types of ground states depending upon the composition and level of disorder. Voltage-biasing superconductors leads to non-monotonic current-voltage relations, along with the observation of bistability. We will study the fundamental nature of the ground states of the NbSi system by conducting such experiments. We will also explore the possibility of using the features of bistability in current-voltage characteristics to design switching devices with two or more distinct states. Such devices are promising as building blocks for non-linear electrical networks which can be integrated into computation technologies based on superconducting electronics.

Contact
Shamashis SENGUPTA
Laboratory : IJCLab - UMR9012
Team : ASSD
Team Website
/ Thesis :    Funding :