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\bibitem{Verhulst_etal2014} {\textquotedblleft}\textit{Can p-channel tunnel field-effect transistors perform as good as n-channel?}{\textquotedblright}.Verhulst AS, Verreck D, Pourghaderi MA, Van de Put M, Sor{\'e}e B, Groeseneken G, Collaert N, Thean AV-Y, Applied physics letters \textbf{105}, 043103 (2014).   http://doi.org/10.1063/1.4891348

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