Epitaxial La0.67Sr0.33MnO3∕La0.67Ba0.33MnO3 superlattices

Abstract

Artificially layered superlattices allows manipulation of strain and the study of dimensional crossover by introducing additional degrees of freedom not found in bulk materials. Superlattices of the colossal magnetoresistive materials, La0.67Sr0.33MnO3 (LSMO) and La0.67Ba0.33MnO3 (LBMO) have been grown by pulsed laser deposition with high-pressure in situ reflection high-energy electron diffraction on (001) SrTiO3 substrates. X-ray diffraction shows several sets of superlattice peaks indicating 90Å periodicity. A high Tc for the LSMO and independent switching of LSMO and LBMO at low temperatures is found.