Indications of room-temperature superconductivity at a metal-PZT interface

TL;DR

This paper reports evidence of a potential room-temperature superconductive layer at a metal-PZT interface, indicated by large conductivity and sharp resistance changes near 313 K, interpreted through Bose-Einstein condensation of bipolarons.

Contribution

It presents experimental evidence of high-temperature superconductivity at a metal-PZT interface, proposing a new mechanism involving bipolarons.

Findings

Large electrical conductivity at room temperature

Sharp resistance change near 313 K

Possible superconductive interfacial layer

Abstract

We report the observation of an exceptionally large room-temperature electrical conductivity in silver and aluminum layers deposited on a lead zirconate titanate (PZT) substrate. The surface resistance of the silver-coated samples also shows a sharp change near 313 K. The results are strongly suggestive of a superconductive interfacial layer, and have been interpreted in the framework of Bose-Einstein condensation of bipolarons as the suggested mechanism for high-temperature superconductivity in cuprates.