# Vortex Dynamics in Type II Superconductors

## TL;DR

This paper numerically investigates vortex dynamics in type II superconductors, focusing on vortex entry, defects, and pinning, and proposes a superconducting wire design with ratchet defects to control vortex movement and improve supercurrent.

## Contribution

It introduces a novel superconducting wire with ratchet defects that directs vortex motion and enhances supercurrent, supported by numerical and analytical analysis.

## Key findings

- Vortex entry and pinning are influenced by geometric defects.
- Ratchet defects can direct vortex movement.
- Supercurrent is enhanced by the designed wire under periodic magnetic fields.

## Abstract

Time dependent Ginzburg-Landau equation is solved for type II superconductors numerically, and the dynamics of entering vortices, geometric defects and pinning effects have been investigated. A superconducting wire with ratchet defects is designed to pump the vortices move in a specific direction and enhance the supercurrent when applying the periodical magnetic field. Some properties of this wire have been investigated numerically and analytically.