Modulated electronic configurations in selectively doped multilayered nanostructures

TL;DR

This paper presents a theoretical model explaining how selectively doped multilayered La2CuO4 nanostructures can exhibit induced superconductivity confined near interfaces, aligning with recent experimental findings.

Contribution

It introduces a simple theoretical framework that accounts for interface-confined superconductivity in multilayered nanostructures based on La2CuO4, explaining recent experimental results.

Findings

Superconductivity is confined near interfaces in the multilayered structures.

Non-superconducting layers can exhibit induced superconductivity.

The model aligns with experimental observations of anomalous tunneling characteristics.

Abstract

A simple theoretical model is proposed to describe the recent experimental results on formation of induced superconducting state and anomalous tunneling characteristics in selectively doped multilayered nanostructures based on La$_2$CuO$_4$ perovskite. In particular, it is shown that the structure composed from the nominally non-superconducting (undoped and overdoped) layers turns to be superconducting with superconductivity confined to narrow regions near the interfaces, in agreement with the experimental observations.