Abstract
We present the first measurements of giant magnetoresistance with current perpendicular to the layer planes (CPP-MR) of an exchange-biased spin-valve (EBSV) - a controllable spin-switch. Interpreted with the theory of Valet and Fert, data on EBSVs of permalloy (Py) with Cu yield an unexpectedly short spin-diffusion length in Py -lPysf = 5.5 ± 1 nm. Such a short length has implications for the interpretation of Johnson's data on a Py/Au/Py spin-switch.
Original language | English |
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Pages (from-to) | L1-L6 |
Journal | Journal of Magnetism and Magnetic Materials |
Volume | 170 |
Issue number | 1-2 |
DOIs | |
State | Published - Jun 1997 |
Keywords
- Giant magnetoresistance - CPP
- Permalloy
- Spin-diffusion length
- Spin-switch
- Spin-valve