Thermally induced 0-pi phase transition in Josephson junctions through a ferromagnetic oxide film

TL;DR

This paper theoretically studies Josephson junctions with ferromagnetic oxide films, revealing a temperature-induced 0-pi phase transition that could be useful for future quantum computing components.

Contribution

It introduces a theoretical analysis of 0-pi phase transitions in ferromagnetic oxide-based Josephson junctions, highlighting temperature effects and potential quantum computing applications.

Findings

Formation of a pi-junction in ferromagnetic oxide systems

Temperature increase induces 0-pi phase transition

Potential use in quantum computer architectures

Abstract

We investigate the Josephson transport through a ferromagnetic oxide film, e.g., La$_2$BaCuO$_5$, theoretically. Using the recursive Green's function technique, we found the formation of a pi-junction in such systems. Moreover the 0-pi phase transition is induced by increasing the temperature. Such ferromagnetic-oxide based Josephson junctions may become an element in the architecture of future quantum computers.