A surprising discovery by physicists investigating an unusual class of superconducting materials could offer new insights into the relationship between magnetic vortices and exotic electronic states.
The findings could eventually help accelerate the development of more reliable quantum computers, following the identification of distinctive patterns of electronic charge surrounding magnetic vortices in an iron-based superconductor.
Researchers from Tsinghua University, Southern University of Science and Technology, Boston College, and other institutions reported the findings in a recent study published in Physical Review Letters.
Type-II Superconductors
At the heart of the new research is a class of materials known as type-II superconductors, in which magnetic fields can penetrate through tiny regions called vortices, with electrical currents circulating their central cores.
Using low-temperature scanning tunneling microscopy, the researchers mapped the electronic properties of thin films of cobalt-doped barium iron arsenide with atomic-scale precision.
This led to an unexpected discovery: the team identified repeating patterns of electrical charge, known as charge stripes, that became more pronounced near the centers of magnetic vortices within the superconductor.
Additionally, the researchers uncovered two distinct types of vortex states, one of which exhibited a zero-energy electronic state they interpreted as a Majorana zero mode. These exotic quantum excitations behave mathematically like particles that are their own antiparticles.
Such states are of particular interest to scientists because they could help overcome a major challenge in quantum computing: storing quantum information in ways that resist certain environmental disturbances.
“The distinct vortex types are distinguished by the registry of their centers relative to the charge-stripe pattern and remain robust in ultrathin (2.5-unit-cell) films,” the team writes in their recent study. “Our findings reveal a density-wave-textured vortex matter and provide fresh insights into intertwined phenomena in iron-based superconductors.”
New Paths Toward Reliable Quantum Computing
The team’s research suggests that electronic charge patterns and exotic vortex states may be more closely connected than previously understood, potentially offering new approaches to manipulating Majorana zero modes.
The researchers now hope to determine whether similar relationships exist in other superconducting materials and how these interactions might eventually be controlled for applications in quantum technologies.
Next for the researchers is determining if similar relationships might be happening in other superconducting materials, and also how these interactions could eventually be controlled in ways that may be useful for quantum technologies and related applications.
The team’s recent study, “Intertwined Charge Stripes and Majorana Zero Modes in an Iron-Based Superconductor,” appeared in Physical Review Letters on September 23, 2026.
Micah Hanks is the Editor-in-Chief and Co-Founder of The Debrief. A longtime reporter on science, defense, and technology with a focus on space and astronomy, he can be reached at micah@thedebrief.org. Follow him on X @MicahHanks, and at micahhanks.com.