Control of spin configuration in half-metallic La0.7Sr0.3MnO3 nano-structures
نویسندگان
چکیده
J. Rhensius, C. A. F. Vaz, A. Bisig, S. Schweitzer, J. Heidler, H. S. Körner, A. Locatelli, M. A. Niño, M. Weigand, L. Méchin, F. Gaucher, E. Goering, L. J. Heyderman, and M. Kläui SwissFEL, Paul Scherrer Institut, Villigen PSI 5232, Switzerland & Laboratory for Nanomagnetism and Spin Dynamics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland Laboratory for Microand Nanotechnology, Paul Scherrer Institut, Villigen PSI 5232, Switzerland Fachbereich Physik, Universität Konstanz, Universitätsstraße 10, Konstanz D-78457, Germany Sincrotrone Trieste, Basovizza-Trieste 34149, Italy Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Berlin 12489, Germany GREYC, UMR 6072, CNRS ENSICAEN UCBN, 6 Boulevard du Maréchal Juin, Caen Cedex 14050, France Max-Planck-Institute for Intelligent Systems (formerly Metals Research), Heisenbergstrasse 3, Stuttgart 70569, Germany
منابع مشابه
Spin polarized tunneling in the half-metallic ferromagnet La0.7Sr0.3MnO3: experiment and theory
The magnetoresistance (MR) in polycrystalline colossal magnetoresistive compounds follows a behavior different from single crystals below the ferromagnetic transition temperature. This difference is usually attributed to spin polarized tunneling at the grain boundaries of the polycrystalline sample. Here we derive a theoretical expression for the contribution of spin polarized tunneling to the ...
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Using the point-contact Andreev reflection technique, we have carried out a systematic study of the spin polarization in the colossal magnetoresistive manganite, La0.7Sr0.3MnO3 ~LSMO!. Surprisingly, we observed a significant increase in the current spin polarization with the residual resistivity. This counterintuitive trend can be understood as a transition from ballistic to diffusive transport...
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تاریخ انتشار 2012