Ex situ elaborated proximity mesoscopic structures for ultrahigh vacuum scanning tunneling spectroscopy. - Stolyarov, V. S.; Cren, T.; Debontridder, F.; Brun, C.; Veshchunov, I. S.; Skryabina, O. V.; Rusanov, A. Yu.; Roditchev, D. (Applied Physics Letters, 2014)