Fizika Nizkikh Temperatur: Volume 43, Number 8 (August 2017), p. 1131-1136    ( to contents , go back )

Inhomogeneous broadening of the conductance histograms for molecular junctions

Julian M. Bopp, Sumit Tewari, Carlos Sabater, and Jan M. van Ruitenbeek

Kamerlingh Onnes Laboratorium, Universiteit Leiden, Postbus 9504, 2300 RA Leiden, The Netherlands
E-mail: ruitenbeek@physics.leidenuniv.nl

Received January 25, 2017

Abstract

We demonstrate that the notched-wire mechanically controllable break junction technique can be exploited for the study of single molecule junctions. We have developed a protocol for deposition of thiol-coupled molecules onto Au electrodes from solution. We find surprisingly sharp conductance historgrams at low temperatures, which suggest that the commonly observed large width of the peaks in conductance historgams is the result of inhomogeneous broadening.

PACS: 73.22.–f Electronic structure of nanoscale materials and related systems;
PACS: 73.63.–b Electronic transport in nanoscale materials and structures;
PACS: 73.63.Rt Nanoscale contacts.

Key words: break junctions, MCBJ, molecular electronics, OPE3, conductance histogram.

Published online: June 26, 2017

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