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Discovery of the high thermoelectric performance in low-cost Cu8SiSxSe6-x argyrodites
Taras Parashchuk, Oleksandr Cherniushok, Raul Cardoso-Gil +3
Cu-based argyrodites have gained much attention as a new class of thermoelectric materials for energy harvesting. However, the phase transition occurring in these materials and low…
Fixing Left and Right: Assignment of Chiral Elemental Crystal Structures using Kikuchi Diffraction
Aimo Winkelmann, Grzegorz Cios, Tomasz Tokarski +3
Crystals of the chemical elements manganese, tellurium, and selenium can show the effects of handedness. In order to sense the possible effects of a changing sense of chirality on…
Formation of Vacancies in Si- and Ge-based Clathrates: Role of Electron Localization and Symmetry Breaking
Amrita Bhattacharya, Christian Carbogno, Bodo Boehme +3
The formation of framework vacancies in Si- and Ge-based type-I clathrates is studied as function of filling the cages with K and Ba atoms using density-functional theory. Our anal…
Ternary borides NbFeB and TaFeB with Kagome-type iron framework
Qiang Zheng, Roman Gumeniuk, Horst Borrmann +7
Two new ternary borides FeB ( = Nb, Ta) were synthesized by high-temperature thermal treatment of samples obtained by arc-melting. This new type of structure wi…
Extremely large magnetoresistance and ultrahigh mobility in the topological Weyl semimetal NbP
Chandra Shekhar, Ajaya K. Nayak, Yan Sun +10
Recent experiments have revealed spectacular transport properties of conceptually simple semimetals. For example, normal semimetals (e.g. WTe) have started a new trend to reali…
Phonon-drag effect in FeGa3
Maik Wagner-Reetz, Deepa Kasinathan, Walter Schnelle +4
The thermoelectric properties of single- and polycrystalline FeGa3 are systematically investigated over a wide temperature range. At low temperatures, below 20 K, previously not kn…