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Title: Magnetoresistance at artificial interfaces in the itinerant SrRuO3 ferromagnet
Author: Bibes, Manuel
Martínez Benjamin, Joan Josep
Fontcuberta i Griñó, Josep
Trtik, V.
Benitez, F.
Ferrater Martorell, Cèsar
Sánchez Barrera, Florencio
Varela Fernández, Manuel, 1956-
Keywords: Materials
Propietats magnètiques
Magnetic properties and materials
Electronic transport in condensed matter
Electronic structure and electrical properties of surfaces
Issue Date: 1999
Publisher: The American Physical Society
Abstract: The magnetoresistance across interfaces in the itinerant ferromagnetic oxide SrRuO3 have been studied. To define appropriately the interfaces, epitaxial thin films have been grown on bicrystalline and laser-patterned SrTiO3 substrates. Comparison is made with results obtained on similar experiments using the double-exchange ferromagnetic oxide La2/3Sr1/3MnO3. It is found that in SrRuO3, interfaces induce a substantial negative magnetoresistance, although no traces of the low-field spin tunneling magnetoresistance are found. We discuss these results on the basis of the distinct degree of spin polarization in ruthenates and manganites and the different nature of the surface magnetic layer formed at interfaces.
Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i
It is part of: Physical Review B, 1999, vol. 60, num. 13, p. 9579-9582
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ISSN: 0163-1829
Appears in Collections:Articles publicats en revistes (Física Aplicada)

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