Spin-polarized tunneling through a ferromagnetic insulator

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Kok, M. and Beukers, J.N. and Brinkman, A. (2009) Spin-polarized tunneling through a ferromagnetic insulator. Journal of Applied Physics, 105 (7). 07C919. ISSN 0021-8979

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Abstract:The polarization of the tunnel conductance of spin-selective ferromagnetic insulators is modeled, providing a generalized concept of polarization including both the effects of electrode and barrier polarization. The polarization model is extended to take additional non-spin-polarizing insulating layers into account. These additional tunnel barriers are found to have a large effect on the tunneling polarization, both positively and negatively, depending on the material parameters. The model is applied to spin-filter devices containing the promising spin filter material EuO
Item Type:Article
Copyright:© 2009 American Institute of Physics
Faculty:
Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/73743
Official URL:http://dx.doi.org/10.1063/1.3068643
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Metis ID: 259192