Phase diagrams of a p-Wave superconductor inside a mesoscopic disc-shaped sample

TL;DR

This paper investigates how finite-size and boundary effects influence the phase behavior of p-wave superconductors in mesoscopic disc samples, revealing multiple phase transitions and reentrant superconductivity under magnetic fields.

Contribution

It provides a detailed analysis of phase diagrams for p-wave superconductors in mesoscopic geometries using Ginzburg-Landau theory, highlighting novel boundary and size effects.

Findings

Multiple phase transitions observed in the system.

Reentrant superconductivity as a function of magnetic field.

Boundary effects significantly influence phase stability.

Abstract

We study the finite-size and boundary effects on a time-reversal-symmetry breaking p-wave superconducting state in a mesoscopic disc geometry using Ginzburg-Landau theory. We show that, for a large parameter range, the system exhibits multiple phase transitions. The superconducting transition from the normal state can also be reentrant as a function of external magnetic field.