University of Cologne Uncovers Spectroscopic Evidence of Topological Superconductivity in TI Josephson Junctions

Physicists at the University of Cologne have found direct spectroscopic evidence for topological superconductivity in topological insulator Josephson junctions. This research supports the Fu-Kane theoretical model and offers a way to achieve topological superconductivity and Majorana zero modes without relying on destructive magnetic fields. The study used tunneling spectroscopy to observe phase-controlled energy gap closing and reopening, a key signature of topological superconductivity. The po