The temperature-dependent magnetization profile across an epitaxial bilayer of ferromagnetic La2/3Ca1/3MnO3 and superconducting YBa2Cu3O7-d

TL;DR

This study investigates the temperature-dependent magnetization profile of an epitaxial bilayer of ferromagnetic La2/3Ca1/3MnO3 and superconducting YBa2Cu3O7-d, revealing substrate and superconductor influences at low temperatures.

Contribution

It provides high-resolution measurements of the magnetization profile across the bilayer and isolates the effects of the superconductor and substrate on magnetization.

Findings

Magnetization profile varies with temperature.

Substrate influences magnetization at interfaces.

Superconductor affects the adjacent ferromagnetic layer.

Abstract

Epitaxial bilayers of ferromagnetic La2/3Ca1/3MnO3 (LCMO) and superconducting YBa2Cu3O7-d (YBCO) have been grown on single-crystalline SrTiO3 (STO) substrates by pulsed laser deposition. The Manganese magnetization profile across the FM layer has been determined with high spatial resolution at low temperatures by X-ray resonant magnetic reflectivity (XRMR). It is found that not only the adjacent superconductor but also the substrate underneath influences the magnetization of the LCMO film at the interfaces at low temperatures. Both effects can be investigated individually by XRMR.