# The effect of an external magnetic field on the maximum current of SNINS junctions near the critical temperature

## TL;DR

This study investigates how an external magnetic field influences the maximum current in SNINS superconducting junctions near the critical temperature, considering various material and structural factors.

## Contribution

It provides new insights into the magnetic field dependence of maximum current in SNINS junctions, accounting for anharmonic current-phase relations and normal layer effects.

## Key findings

- Maximum current depends on magnetic flux across different transmission coefficients.
- Normal layer thickness and impurities affect current sensitivity to magnetic fields.
- Magnetic field impacts are significant near the critical temperature.

## Abstract

The behaviour of superconducting junctions of SNINS-type (where S is superconductor, N is normal metal, I is insulator) with anharmonic current-phase relations in the external magnetic field near the critical temperature was investigated. The dependence of the maximum current on the value of the magnetic flux in a wide range of electron transmission coefficient values was considered. Also, it was investigated how the presence of a normal layer of an arbitrary thickness in the scale of coherence length and in the presence of impurities in superconducting regions affect the sensitivity of the maximum current to the magnetic field magnitude.