Infrared study of YBa2Cu3O7/La0.67Ca0.33MnO3 superlattices

Warning

This publication doesn't include Faculty of Economics and Administration. It includes Faculty of Science. Official publication website can be found on muni.cz.

Authors	DUBROKA Adam CRISTIANI G. HABERMEIER H.-U. HUMLÍČEK Josef
Year of publication	2004
Type	Article in Periodical
Magazine / Source	Thin Solid Films
MU Faculty or unit	Faculty of Science
Citation
Field	Solid matter physics and magnetism
Keywords	Infrared ellipsometry; Superlattice; La1-xCaxMnO3; YBa2Cu3O7
Description	The infrared response of superlattices (SLs) composed of YBa2Cu3O7 (YBCO) and La0.67Ca0.33MnO3 (LCMO) on SrTiO3substrate has been studied by ellipsometry in the range from 400 to 5000 cm-1. We use a model calculation of the optical response to distinguish the contribution of the SL and the substrate.The infrared data provide an evidence of a strong interaction between the YBCO and LCMO layers.The mid-infrared resonance located at approximately 1000-3000 cm-1 is discussed in terms of the polaronic absorption in LCMO.The resonance could indicate a charge transfer from the YBCO to the LCMO layers.
Related projects:	Physical properties of new materials and layered structures