Dresden 2017 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 98: Nanostructures at Surfaces: 1D Systems

O 98.1: Hauptvortrag

Donnerstag, 23. März 2017, 15:00–15:30, WIL C307

Spin-charge transport phenomena on the atomic scale — •Christoph Tegenkamp — Institut für Festkörperphysik, Leibniz Universität Hannover, Germany

Low dimensional metallic structures, e.g. quantum wires and films on surfaces, reveal fascinating phenomena of condensed matter physics. Among others, 2D-superconductvity, formation of charge density waves and topologically protected edge states were realized lately with atomic precision and directly probed by electronic transport. Generally, the surface science approach benefits from the fact that the low dimensional systems can be comprehensively characterized and manipulated in view of their atomic structure and electronic bands. This is a prerequisite to understand electronic transport on the atomic scale. In this talk I will introduce the technique of surface sensitive transport and highlight some recent examples of our group from seemingly different fields, e.g. spintronic, correlated materials and mesoscopic physics. Besides epitaxial Bi-semimetal films with magnetic impurities the talk covers spin-orbit density wave driven metal-insulator transitions in Pb-wires as well as ballistic transmittance of electrons in graphene nanostructures.