Chiriality in a three-band superconducting prism in ZFC and FC processes

TL;DR

This study investigates the magnetic and superconducting properties of a three-band mesoscopic prism under external magnetic fields, revealing vortex tunneling and cluster formations due to inter-band interactions.

Contribution

It introduces a detailed analysis of vortex dynamics and configurations in a three-band superconducting system under ZFC and FC processes, highlighting non-monotonic inter-band effects.

Findings

Vortex and anti-vortex tunneling between bands

Vortex cluster formation within the sample

Non-monotonic inter-band interactions influence vortex behavior

Abstract

In the present work, we will study the superconducting properties of a mesoscopic three-dimensional prism with square transversal section under an external magnetic field in both Zero-Field Cooling (ZFC) and Field-Cooling (FC) process. The studied sample is a three-band system (with three condensates $\psi_{1}$, $\psi_{2}$, $\psi_{3}$), in which we take a Josephson type inter-band coupling simulated via $\gamma$ parameter. We analyze the magnetization, superconducting electronic density and free Gibbs energy considering both processes. As results, we found an interesting tunneling of vortex and anti-vortex between the bands, and vortex cluster configuration in the sample. This behaviour is due to the non-monotonic interaction between the bands.