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Superconductivity in the Endohedral Ga Cluster Compound PdGa5

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journal contribution
posted on 17.05.2021, 20:13 by Zuzanna Ryżyńska, Piotr Wiśniewski, Dariusz Kaczorowski, Weiwei Xie, Robert J. Cava, Tomasz Klimczuk, Michal̷ J. Winiarski
Superconductivity is observed below Tc = 1.6 K in an endohedral Ga cluster compound PdGa5 using magnetization and heat capacity measurements. Electronic structure calculations show that the density of states (DOS) at the Fermi level is dominated by Ga s and p states and that the overall shape of DOS is similar to what was found in other endohedral Ga cluster superconductors, such as MoxGa5x+1, ReGa5, and T2Ga9 (T = Rh and Ir). Our results provide a more complete picture of the relationship between the valence electron count and superconductivity in the family of endohedral Ga cluster superconductors.