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Title: A spin beam splitter in graphene through the Goos–Hänchen shift

We propose a method of realizing an effective electron spin beam splitter in graphene through the Goos-Hänchen effect. The device consists of a layer of monolayer graphene on which two ferromagnetic stripes are deposited with parallel or antiparallel magnetization configuration. It is shown that the transmitted spin-up and spin-down electron beams are found at different longitudinal positions and their spatial separation can be enhanced by the number of transmission resonances formed between the two ferromagnetic stripes. The spatial separation between the spin-up and spin-down electron beams can reach values up to hundreds of wavelengths, which can be observed experimentally.
Authors:
 [1] ;  [1] ;  [2]
  1. Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong (China)
  2. (China)
Publication Date:
OSTI Identifier:
22392065
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 21; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BEAM SPLITTING; ELECTRON BEAMS; ELECTRONS; GRAPHENE; MAGNETIZATION; RESONANCE; SPIN