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Lead telluride is an important thermoelectric material but its metal-to-semiconductor transition above 230 °C is not fully understood. Here, atomic-resolution transmission electron microscopy provides structural insights into this transition, explaining the metallic behavior by local structural changes leading to the formation of a dislocation network within the rock salt structure. more

Recent research suggested that hydrodynamic electron flow in 3D conductors was possible, but exactly how it happened or how to observe it remained unknown. Until now. 
A team of researchers from Harvard, MIT and the Max Planck Institute Chemical Physics of Solids developed a theory to explain how hydrodynamic electron flow could occur in 3D materials and observed it for the first time using a new imaging technique. more

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Über 5.000 Läufer haben am Mittwochabend am ersten Tag der REWE-Team-Challenge teilgenommen. Das MPI CPfS war mit 16 Laufbegeisterten in schicken neuen Shirts in den Max-Planck Farben mit dabei! In vier Teams, einem Frauen- und drei Männerteams, ging es auf der 5 km langen Strecke vom Kulturpalast durch die historische Innenstadt Dresdens zum Rudolf-Harbig-Stadion. Alle haben die stimmungsvolle Laufstrecke genossen und unser Frauenteam hat es fast in die Top 10 geschafft (Platz 14)! more

The phenomenon of superconductivity, providing current transmission without dissipation and a host of unique magnetic properties arising from macroscopic quantum coherence, was first discovered over a century ago. It was not understood until 1957, after which it quickly became clear that superconductors could in principle exist with a wide variety of the fundamental characteristic often referred to as the order parameter. Until the late 1970’s, however, all superconductors found experimentally had the same class of order parameter. more