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TMR of double spin-valve type AF/FM/I/FM/I/FM/AF magnetic tunneling junctions
An unusually large enhancement of TMR at 77 K was observed in double barrier tunnel junctions (DBTJ). This is explained with extended Julliere's model which yields a twice larger TMR value. When the spin coherence length is much smaller at higher temperature, DBTJ is shown to work as a series o...
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Published in: | Journal of magnetism and magnetic materials 2002-02, Vol.240 (1), p.137-139 |
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Main Authors: | , , , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | An unusually large enhancement of TMR at 77
K was observed in double barrier tunnel junctions (DBTJ). This is explained with extended Julliere's model which yields a twice larger TMR value. When the spin coherence length is much smaller at higher temperature, DBTJ is shown to work as a series of two single barrier tunnel junctions. |
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ISSN: | 0304-8853 |
DOI: | 10.1016/S0304-8853(01)00761-2 |