PHYSIKALISCHES KOLLOQUIUM Wintersemester 16/17 Montag, 05.12.2016, 12 Uhr c.t. H-NB Interface Superconductor with Gap Behaviour like a HighTemperature Superconductor Dr. Hans Boschker Max-Planck-Institut für Festkörperforschung in Stuttgart The electron liquid at the LaAlO3/SrTiO3 interface is a model system for the study of superconductivity as it provides a two-dimensional superconductor whose properties can be tuned with an electrical gate field. We developed planar tunnel junctions to study the superconductivity spectroscopically. At low temperatures we observe a gap in the density of states whose shape agrees well with the predictions of the BCS theory. The gap increases with decreasing charge density in the entire phase diagram and persists up to temperatures far above Tc in the underdoped regime. These results are analogous to the pseudogap behavior of the hightransition-temperature copper oxide superconductors. Einführung: Prof. Dr. I. Eremin Die Fakultät lädt alle Interessierten herzlich ein. Ab 11.45 Uhr Kaffee/Tee im Hörsaal
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