Diffusion theory of spin injection into organic polymers

Instead of spin electrons or holes, the carriers in polymers are supposed to be spin polarons or spinless bipolarons. Based on the spin diffusion theory and Ohm's law, we studied spin-polarized injection into organic polymers. It was obtained that only spin polarons are responsible for the curr...

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Bibliographic Details
Published in:Journal of physics. Condensed matter 2005-04, Vol.17 (15), p.2341-2347
Main Authors: Ren, J F, Fu, J Y, Liu, D S, Mei, L M, Xie, S J
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electronic transport in condensed matter
Exact sciences and technology
Physics
Spin polarized transport
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Summary:Instead of spin electrons or holes, the carriers in polymers are supposed to be spin polarons or spinless bipolarons. Based on the spin diffusion theory and Ohm's law, we studied spin-polarized injection into organic polymers. It was obtained that only spin polarons are responsible for the current spin polarization in a ferromagnetic (FM)/organic system. Effects of the conductivity matching and the interfacial resistances on the current spin polarization were discussed.
ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/17/15/007