Spin-polarized quasiparticles injection effects in the normal state of YBCO 
thin films

Soltan, S.; Albrecht, J.; Habermeier, H.-U.

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Spin-polarized quasiparticles injection effects in the normal state of YBCO thin films

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Soltan, S.
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;

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Albrecht, J.
Scientific Facility Thin Film Technology (Gennady Logvenov), Max Planck Institute for Solid State Research, Max Planck Society;

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

Soltan, S., Albrecht, J., & Habermeier, H.-U. (2007). Spin-polarized quasiparticles injection effects in the normal state of YBCO thin films. Physica C, 460, 1088-1089.

Cite as: https://hdl.handle.net/21.11116/0000-000E-B655-5

Abstract

We report detailed transport studies on ferromagnet-superconductor heterostructures. Epitaxial heterostructures of half-metal colossal magnetoresistive La2/3Ca1/3MnO3 (HM-CMR) and high-T-c, superconducting YBa2CU3O7-delta (HTSC) are grown on SrTiO3 (100) single crystal substrates using pulsed laser deposition. Using the HM-CMR layer as source for spin-polarized quasiparticles, we show the effect of injection of spin-polarized quasiparticles into the ab-plane and along the c-axis in the normal state of YBCO. The results show a drop in the ab-plane resistance R-ab(7) in the case of injection along the c-axis that is discussed to be related to the opening of a spin-gap in the superconductor. (c) 2007 Elsevier B.V. All rights reserved.