Ordering of dopants and potential increase in Tc to near room temperature

TL;DR

This paper proposes a novel dopant ordering method in cuprate superconductors aiming to significantly increase their critical temperature towards room temperature by spatially separating doped and undoped regions.

Contribution

It introduces a new approach to enhance Tc by ordering dopants to create regions with different superconducting properties.

Findings

Potential to increase Tc close to room temperature

Dopant ordering separates regions with different Tc values

Method applicable to underdoped cuprate regimes

Abstract

This paper describes a novel method to increase the resistive Tc of cuprate superconductors to values that might approach room temperature if the method is applied to the so-called underdoped regime. This involves ordering the dopants that provide the holes as well as provide pair breaking. The strategy is to separate the doped regions with lower Tc from metallic but undoped regions with the higher Tc.