Tunable Flux Vortices in 2D Dirac Superconductors

TL;DR

This paper explores how the Berry curvature in 2D Dirac superconductors influences flux vortex quantization, revealing novel effects of quantum geometry on superconducting properties.

Contribution

It demonstrates the impact of single-particle Berry curvature on fluxoid quantization in 2D superconductors, linking quantum geometry to observable superconducting phenomena.

Findings

Berry curvature modifies fluxoid quantization

Anomalous flux quantization can be experimentally observed

Quantum geometry affects many-body superconducting states

Abstract

The non-trivial geometry encoded in the Quantum Mechanical wavefunctions has important consequences for its single-particle as well as many-body dynamics. Yet, our understanding of how the geometry of the single-particle eigenstates are manifest in the characteristics of a many-particle system is still incomplete. Here, we demonstrate how the single-particle Berry curvature modifies the fluxoid quantization of a two dimensional Bardeen-Cooper-Schrieffer (BCS) superconductor, and discuss the experimental scenarios where this anomalous quantization is expected to be realized.