The post-doctoral position is focused on a theoretical study of quasiparticle scattering from point defects and one-dimensional barriers on surfaces, which is experimentally observed by STM through quasiparticle interference (QPI) imaging. A subsequent Fourier transform (FT) of the QPI yields momentum-resolved information of both occupied and unoccupied surface states with high energy resolution. Therefore, a theory is required that could account for spin-related effects in the FT-QPI. The position will be a part of the project aimed at investigation of spin-orbit related phenomena in a rich variety of materials, from noble-metal-based surface alloys to non-centrosymmetric polar semiconductors and topological insulators, relevant for spintronic applications. Close collaboration with internationally recognized experimental and theoretical groups of CFM, DIPC, the University of the Basque Country, the University of Wurtzburg (Germany), Peter Grunberg Institut and Institute for Advanced Simulation, Forschungszentrum, Julich (Germany), and the University Bicocca (Milano, Italy) is planned. The study is intended to be based on performing both model and ab initio calculations taking explicitly spin-orbit interaction into account. The tasks include the analysis of spin-splitting signatures in QPI patterns observed at the surfaces, reflection and transmission through a one-dimensional barrier, and the structure and spatial decay of energy-resolved Friedel oscillations. The candidate is expected to have a strong background in multiple scattering theory and many-body perturbation theory. Experience with first-principles density functional and many-body methods is essential as well as excellent programming skills.
Contact person: Evgueni Tchoulkov (evguenivladimirovich.tchoulkov(at)ehu.eus)
Más información aquí.