Electronic Structure in the Superconducting State from First Principles

Explore the application of Multiple Scattering Theory in formulating a first-principles theory of inhomogeneous superconductivity in this 1-hour 10-minute talk by Dr. Balazs Ujfalussy. Delve into the study of chains of magnetic atoms on superconductor surfaces, focusing on Majorana Zero Modes (MZMs) and their potential as quantum bits with topological protection. Examine the challenges in experimentally identifying MZMs and the importance of first-principles calculations in designing topological systems. Investigate an Fe chain on Au-covered Nb(110) surface as a case study, discovering the conditions for robust zero energy states with MZM signatures. Learn about the formation and distinction of topologically trivial and non-trivial zero energy edge states, their stability, and the emergence of internally antisymmetric triplet states. Gain insights into topological fragmentation and the potential for manipulating Majorana Zero Modes within superconducting nanowires, paving the way for future braiding protocols.