i i ct.qmat 17 The material’s fascinating properties were discovered in Dresden. We’re now working together to find the perfect formula,” explains Würzburg doctoral student Philipp Kagerer (right). “Mind you, it’ll take a while yet to translate the results into electronic components.” Kagerer’s research colleague Celso I. Fornari was also instrumental in achieving this milestone in materials design. “Our collaboration meant the Dresden experts shared their knowledge of manganese bismuth telluride in bulk crystal form with my colleagues and me. Contributing my background in thinfilm technology, we then took this research to the next level by producing MnBi2Te4 films as thin as a single layer,” says Fornari, who was the first postdoctoral scholar to be supported by the Hallwachs-Röntgen Postdoc Program (p. 62). Topologische Isolatoren Topological insulators ... sind revolutionäre Quantenmaterialien, die in ihrem Inneren isolierend sind, aber auf ihrer Oberfläche bzw. an ihren Rändern Strom verlustfrei leiten. Damit vereinen sie eigentlich gegensätzliche Eigenschaften. Die erste experimentelle Realisierung dieser neuen Materialklasse gelang der Arbeitsgruppe um Laurens W. Molenkamp in Würzburg – heute einer der ct.qmat-Forscher. ... are revolutionary quantum materials. They combine contradictory properties because whereas their interior acts like an electrical insulator, the surface can conduct electricity without loss. This new class of materials was first created in the laboratory by the group in Würzburg headed by Laurens W. Molenkamp – now one of the researchers in ct.qmat. Spintronik Spintronics ... steht für eine neuartige Form der Elektronik, bei der Informationen mithilfe des Elektronen-Spins – das heißt, des eigenen magnetischen Moments der Elektronen – kodiert und nach den Gesetzen der Quantenphysik verarbeitet werden. Der Spin spielt bei topologischen Isolatoren eine entscheidende Rolle. ... represents a new type of electronics in which information is encoded using the spin of electrons – i.e., the electrons’ own magnetic moment – and processed according to the laws of quantum physics. Spin plays a key role in topological insulators. Interacting topological edge channels, Nat. Phys. (2020). All topological bands of all nonmagnetic stoichiometric materials, Science (2022). Any axion insulator must be a bulk three-dimensional topological insulator, Phys. Rev. B (2021). Design and realization of topological Dirac fermions on a triangular lattice, Nat. Commun. (2021). Weitere ausgewählte Highlights Further selected highlights Paper highlight Prediction and observation of an antiferromagnetic topological insulator, Nature (2019).
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