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Analysis of the spin polarization of secondary electrons emitted from Au/Fe
Institution:1. Department of Physics and Electronics, College of Engineering, Osaka Prefecture University, Osaka 599-8531, Japan;2. Advanced Research Laboratory, Hitachi, Ltd., Saitama 350-0395, Japan;1. Ningbo Institute of Northwestern Polytechnical University, Institute of Flexible Electronics (IFE), Northwestern Polytechnical University (NPU), Xi''an 710072, China;2. Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China;1. Department of Chemistry, Jamia Millia Islamia, Jamia Nagar, New Delhi 110 025, India;2. Department of Chemistry, College of Science, Taif University, P.O. Box 110999, Taif 21944, Saudi Arabia;1. School of Food Science and Engineering, Hainan University, Haikou 570228, PR China;2. Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Hainan University, Haikou 570228, PR China
Abstract:The spin polarization of secondary electrons emitted from Au thin films on an Fe substrate is studied with a Monte Carlo simulation of electron scattering. The magnetic information depth of the secondary electrons is estimated by fitting the exponential function to the calculated data and we found that the magnetic information depth increases with the primary electron energy from 11.5 at 0.3 to 26.3 Å at 4 keV. This result agrees fairly with the experimental one for the same nonmagnetic/magnetic bilayer system and it is much larger than that reported so far for bulk magnetic materials.
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