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Journal Article

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

MPS-Authors
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Cristiani,  G.
Scientific Facility Thin Film Technology (Gennady Logvenov), Max Planck Institute for Solid State Research, Max Planck Society;

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Habermeier,  H.-U.
Scientific Facility Thin Film Technology (Gennady Logvenov), Max Planck Institute for Solid State Research, Max Planck Society;
Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society;
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Dubroka, A., Cristiani, G., Habermeier, H.-U., & Humlíček, J. (2004). Infrared study of YBa2Cu3O7/La0.67Ca0.33MnO3 superlattices. Thin Solid Films, 455-456, 172-176.


Cite as: https://hdl.handle.net/21.11116/0000-000E-FE9A-7
Abstract
The infrared response of superlattices (SLs) composed of YBa2Cu3O7
(YBCO) and La-0.67 Ca0.33MnO3 (LCMO) on SrTiO3 substrate 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. (C)
2004 Elsevier B.V. All rights reserved.