Topic
Conductance
About: Conductance is a research topic. Over the lifetime, 8088 publications have been published within this topic receiving 235961 citations.
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TL;DR: It is suggested that four melittin monomers are needed to form a channel and, furthermore, that a minimum of four equivalent electronic charges need to be displaced by the electrical field to explain the voltage dependence of the conductance.
344 citations
335 citations
TL;DR: Evidence is presented that the disappearance of the 0.7 structure at very low temperature signals the formation of a Kondo-like correlated spin state, including a zero-bias conductance peak that splits in a parallel field, scaling of conductance to a modified Kondo form, and consistency between peak width and the Kondo temperature.
Abstract: Besides the usual conductance plateaus at multiples of 2e(2)/h, quantum point contacts typically show an extra plateau at approximately 0.7(2e(2)/h), believed to arise from electron-electron interactions that prohibit the two spin channels from being simultaneously occupied. We present evidence that the disappearance of the 0.7 structure at very low temperature signals the formation of a Kondo-like correlated spin state. Evidence includes a zero-bias conductance peak that splits in a parallel field, scaling of conductance to a modified Kondo form, and consistency between peak width and the Kondo temperature.
335 citations
TL;DR: In this paper, the effect of modifying the molecule−electrode binding interface of an α,α,α-xylyl-dithiol molecular wire was investigated and it was shown that except for the length of the surface bond, the conductance is not affected by variations of surface geometry.
Abstract: We report on the effect of modifying the molecule−electrode binding interface of an α,α‘-xylyl-dithiol molecular wire. We find that except for the length of the surface bond, the conductance is not affected by variations of the surface geometry. We also compare the conductance of different terminal atom−electrode metal combinations and find that the conductance is substantially larger when the wire is terminated by selenium rather than sulfur or oxygen. We also find that gold makes a better electrode than silver.
333 citations
331 citations