A new probe of superconductivity: quantitative measurements on defined electron transfer with solute at the interface between liquid electrolyte and oxocuprate electrode in the superconducting state

Abstract

The rate of electron transfer, between dissolved decamethylferrocene molecules and an oxocuprate high temperature superconductor [Tl 1223] electrode, represented in impedance spectroscopy by an electrical resistance term R_CT, is shown to be measurable (R_CT tending to dip around the superconducting transition temperature), so opening up the prospect of a new, controllably variable, probe of superconductivity.