A New structural parameter for Perovskite type compounds and its application to 'Stripe Phases'

TL;DR

This paper introduces PESATc, a novel structural parameter based on geometric modeling, to analyze stripe phases in perovskite compounds, demonstrating a correlation with superconducting transition temperatures.

Contribution

The paper proposes a new geometric parameter, PESATc, for perovskite compounds and applies it to understand stripe phases and their relation to superconductivity.

Findings

PESATc correlates linearly with Tc in rare earth perovskites.

The geometric model involves superimposing an Octahedrical Moebius Strip.

Application to (La,Ca)MnO3 shows relevance to stripe phases.

Abstract

A new parameter named PESATc (Parametro Estructural de los Superconductores de Alta Temperatura critica) is presented and used to discuss an aproach to the 'Stripe Phases' in (La,Ca)MnO3 superconductors. The PESATc parameter is based on the superposition of an Octahedrical Moebius Strip over the CuO planes and apical oxygen O(4). The linear correlation between PESATc and Tc for Rare Earth based perovskite compound is shown.