Chemistry Letters, Vol.34, No.3, 374-375, 2005
Electrochemical fabrication of Pd-Au heterogeneous nanocontact showing stable conductance quantization under applying high bias voltage
A novel nanostructure, heterogeneous Pd-Au nanocontact showing conductance quantization, was fabricated via selective electrochemical deposition of Pd at a gap of two sustainable thin Au wires in solution. The stability of Pd monatomic contact increased when the potential of the electrode was kept at negative potential. Contribution of the adsorbed hydrogen on Pd-Au contact was considered as the origin of the improved stability.