Spin filtering with EuO: Insight from the complex band structure
نویسندگان
چکیده
Pavel V. Lukashev,1 Aleksander L. Wysocki,1,2 Julian P. Velev,3 Mark van Schilfgaarde,4 Sitaram S. Jaswal,1 Kirill D. Belashchenko,1 and Evgeny Y. Tsymbal1,* 1Department of Physics and Astronomy & Nebraska Center for Materials and Nanoscience, University of Nebraska, Lincoln, Nebraska 68588, USA 2School of Applied Engineering Physics, Cornell University, Ithaca, New York 14853, USA 3Department of Physics, Institute for Functional Nanomaterials, University of Puerto Rico, San Juan, Puerto Rico 00931, USA 4Department of Physics, Kings College London, London WC2R 2LS, England, United Kingdom (Received 23 April 2012; published 14 June 2012)
منابع مشابه
Europium Oxide as a Perfect Electron Spin Filter
Essential to the emergence of spin-based electronics is a source of highly polarized electron spins. Conventional ferromagnets have at best a spin polarization P~50%. Europium monoxide is a novel material capable of generating a highly spin-polarized current when used as a tunnel barrier. EuO is both a Heisenberg ferromagnet (Tc=69 K) and a semiconductor. Exchange splitting of the conduction ba...
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