Evidence for a single hydrogen molecule connected by an atomic chain

Abstract

Stable, single-molecule conducting-bridge configurations are typically identified from peak structures in a conductance histogram. In previous work on Pt with H${}_2$ at cryogenic temperatures it has been shown that a peak near 1 $G{}_0$ identifies a single molecule Pt-H${}_2$-Pt bridge. The histogram shows an additional structure with lower conductance that has not been identified. Here, we show that it is likely due to a hydrogen decorated Pt chain in contact with the H${}_2$ molecular bridge.

4 pages, 4 figures