Phase diagram of the resistive state of the narrow superconducting channel in the voltage-driven regime

TL;DR

This paper uses numerical solutions of Ginzburg-Landau equations to explore the resistive states of superconducting channels under voltage, revealing complex dynamics and detailed phase diagrams.

Contribution

It provides the first detailed phase diagram of the resistive state of narrow superconducting channels in the voltage-driven regime based on numerical analysis.

Findings

Discovered disorder oscillations in current-voltage characteristics.

Identified chaotic dynamics in long channels within certain voltage ranges.

Produced the most comprehensive phase diagram of the resistive state to date.

Abstract

Based on the numerical solution non-stationary Ginzburg-Landau equations, we investigated the evolution of the order parameter of superconducting channels with different lengths under applied voltage (so-called voltage-driven regime). We calculated current-voltage characteristics for channels of different lengths and found out the origin of theirs characteristic disorder oscillations. For very long channels in the certain voltage interval we reveal the chaotic dynamic of the order parameter. Collected data allowed us to plot the most complete and detailed phase diagram of the resistive state of the superconducting channel in the voltage-driven regime.