How to build a density plot. (A) On the top left-hand side, we show a typical trace of conductance of gold at 4 K during the process of breaking (red) and forming (green) a contact. (B) The top right-hand side is a zoom near 1G0 to define the values before and after the JC, Ga and Gb, and JOC, Gc and Gd. (C, D) The bottom figures show colour density plots where dark colours represent those values of conductance that appear more frequently (left for JC and right for JOC).
Sabater et al. Nanoscale Research Letters 2013 8:257 doi:10.1186/1556-276X-8-257