# Influence of electrical and magnetic fields on the excess current in HTSC - normal metal point contacts

## TL;DR

This study investigates how electrical and magnetic fields affect the excess current in YBaCuO-normal metal point contacts, revealing polarity-dependent reversible changes in current-voltage behavior.

## Contribution

It demonstrates the influence of external fields on excess current in high-temperature superconductor point contacts, highlighting reversible polarity-dependent effects.

## Key findings

- Polarity-dependent reversible change in Iexc observed
- Bias voltages of several hundred millivolts affect Iexc
- External fields modify current-voltage characteristics

## Abstract

A polarity-dependent reversible change in the current-voltage characteristics between states corresponding to different values of the excess current Iexc is observed for bias voltages of several hundred millivolts in YBaCuO-Ag point contacts in the current-carrying state.