Transport Properties of Layered Heterostructures on the Base of a Conducting Polymer

Abstract

Polydiphenilenphtalide (PDP) belongs to organic dielectrics that demonstrate the electroconducting properties, when applying an external electrostatic field and/or mechanical stresses. In this work, the transport characteristics of thin-film lead–PDP–lead layered structures are studied in a wide temperature range. At quite high temperatures, current–voltage characteristics are adequately described in terms of the injection current model confirmed by a space charge. At temperatures below ~7.5 K, a number of the sample demonstrate peculiarities that can be explained by the effect of induced superconductivity in a thin film of a conducting polymer included between two massive superconductors (lead).