Superconducting Vortex with Antiferromagnetic Core

TL;DR

This paper proposes that vortices in underdoped high-temperature superconductors may have antiferromagnetic cores, detectable via experimental techniques like bc SR and neutron scattering, based on a topological solution in theoretical models.

Contribution

It introduces a novel vortex configuration with antiferromagnetic cores in high T_c superconductors using the SO(5) model and Ginzburg-Landau theory.

Findings

Antiferromagnetic cores can form in superconducting vortices.

Theoretical models predict topological vortex solutions with magnetic order.

Experimental detection methods are proposed for these vortices.

Abstract

We show that a superconducting vortex in underdoped high T_c superconductors could have an antiferromagnetic core. This type of vortex configuration arises as a topological solution in the recently constructed SO(5) nonlinear sigma model and in Ginzburg-Landau theory with competing antiferromagnetic and superconducting order parameters. Experimental detection of this type of vortex by \mu SR and neutron scattering is proposed.