Electrical transport measurement of molecular device fabricated by electrochemical deposition of platinum electrode

Electrical properties of 1,4-benzenedimethanethiol are measured using the electrochemically deposited platinum electrode as one of contact lead to the molecule. Temperature dependence of current-voltage characteristics were measured from room temperature to 27 K. Fowler–Nordheim type tunneling conduction below 40 K and current fluctuation at low temperature were observed. The fluctuating behavior can be understood as electromigration and/or thermal vibration of platinum atoms at the contact between the molecule and the platinum electrode.