Superconducting junctions from non-superconducting doped CuO$_2$ layers

TL;DR

This paper proposes a theoretical modification for describing charge redistribution in multilayered doped CuO$_2$ systems, aiming to create atomically thin superconducting heterojunctions from non-superconducting layers.

Contribution

It introduces a modified theoretical approach for finite-layer systems and suggests specific doping configurations to achieve superconductivity in non-superconducting copper-oxide layers.

Findings

Modified theoretical model for finite multilayered systems.

Proposed doping configurations for superconducting heterojunctions.

Potential to create atomically thin superconducting layers from non-superconducting materials.

Abstract

The theoretical approach proposed recently for description of redistribution of electronic charge in multilayered selectively doped systems is modified for a system with finite number of layers. A special attention is payed to the case of a finite heterostructure made of copper-oxide layers which are all non-superconducting (including non-conducting) because of doping levels being beyond the well-known characteristic interval for superconductivity. Specific finite structures and doping configurations are proposed to obtain atomically thin superconducting heterojunctions of different compositions.