2004/04/22 by Sz. Csonka, A. Halbritter, G. Mihaly +3
Physics and Astronomy · #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevlett.93.016802
published as Phys. Rev. Lett. 93, 016802 (2004) · 4 pages, 4 figures
arxiv created 2004/04/22 · arxiv updated 2009/12/01
Results of an experimental study of palladium nanojunctions in hydrogen environment are presented. Two new hydrogen-related atomic configurations are found, which have a conductances of ~0.5 and ~1 quantum unit (2e2/h). Phonon spectrum measurements demonstrate that these configurations are situated between electrodes containing dissolved hydrogen. The crucial differences compared to the previously studied Pt-H2 junctions, and the possible microscopic realizations of the new configurations in palladium-hydrogen atomic-sized contacts are discussed.