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Zwanenburg, F.A. (author), Van Loon, A.A. (author), Steele, G.A. (author), Rijmenam, C.E.W.M. (author), Balder, T. (author), Fang, Y. (author), Lieber, C.M. (author), Kouwenhoven, L.P. (author)We report the realization of extremely small single quantum dots in p-type silicon nanowires, defined by Schottky tunnel barriers with Ni and NiSi contacts. Despite their ultrasmall size the NiSi–Si–NiSi nanowire quantum dots readily allow spectroscopy of at least ten consecutive holes, and additionally they display a pronounced excited-state...journal article 2009