The International Doctorate Program is focussing on investigating the fundamental properties and potential applications of topological insulators. The program is funded by the Elitenetzwerk Bayern


[...] In this talk, recent Photoelectron Spectroscopy results obtained at Synchrotron Radiation facilities on topological insulators, transition metal dichalcogenides, and transition metal oxides will be presented, where the combination of angle, spin, time and depth-resolved experiments is able to reveal ‘hidden’ spectral features, connected to metallic and/or magnetic properties, as well as to underline the importance of dimensionality effects in quantum materials. [...] More
Tl2Mo6Se6 and K2Cr3As3 crystallise in hexagonal structures with chains of Mo3Se3 or Cr3As3 triangular clusters, sometimes referred to as double-walled nanotubes. The number of guest ions (Tl and K, respectively), the transition metal valence and the crystal space group are different in the two compounds. The electronic structure of both materials is highly one-dimensional with a single Mo dband Fermi surface in Tl2Mo6Se6 and a multiband Fermi surface in K2Cr3As3. Both materials display superconducting instabilities below 7 K. In this seminar we present data of the direct observation of the one-dimensional Fermi surfaces by angle-resolved photoemission spectroscopy (ARPES), taken at temperatures just above the superconducting transition Tc. [...] More
Prof. Dr. Weiss, Lehrstuhl für Experimentelle und Angewandte Physik der Universität Regensburg erhält vom Europäischen Forschungsrat (ERC) einen ERC Advanced Grant in Höhe von 2,5 Millionen Euro. Finanziert wird damit das Projekt „Probing Majorana quasi-particles and ballistic spin-momentum locking in topolocical insulator nanostructures“ über einen Zeitraum von fünf Jahren. [...] More

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