Workshop 2025: Topological effects of Abrikosov vortices in superconductors

Session Information

Location: Lecture room Schay
Day: Thursday, 15 May
Time: 14:00 - 14:30
Chairperson: Susmit Kumar

Presentation Details

Presentation Type: Oral presentation
Title: Topological effects of Abrikosov vortices in superconductors
Abstract: The study of various topological effects on the static location and the dynamics of Abrikosov vortices is an exciting field combining experimental research with theoretical concepts, ultimately touching the development of practical applications. After a short introduction into the underlying physics of vortices in superconductors, I will discuss several topological concepts, leading to regular and quasi-periodic arrangement of vortices, non-reciprocal transport properties caused by vortex motion, vortex ratchets and superconducting diodes. Cellular automata based on vortices could be an avenue for realizing ultrafast data processing with minimal dissipation. Recently, neuromorphic computing has been discussed in relation to topological vortex ensembles.

One of the essential prerequisites for most experimental studies is the magnetic coupling of these vortices, ensuring their separation does not exceed the London penetration depth at the target operating temperature. Achieving the necessary nanoscale precision is particularly challenging in copper-oxide superconductors, the so-called high-temperature superconductors, due to their intricate atomic structure and sensitivity to environmental factors. Traditional lithographic methods face significant limitations in this context, but these can now be circumvented by employing the focused beam of a helium ion microscope. Some examples of this technique will be presented.

Presenter

Prof Wolfgang Lang
University of Vienna | Austria

Authors

1. Lang, Wolfgang | Faculty of Physics, University of Vienna