PERPENDICULAR-CURRENT EXCHANGE-BIASED SPIN-VALVE EVIDENCE FOR A SHORTSPIN-DIFFUSION LENGTH IN PERMALLOY

Authors
STEENWYK SD HSU SY LOLOEE R BASS J PRATT WP
Citation
Sd. Steenwyk et al., PERPENDICULAR-CURRENT EXCHANGE-BIASED SPIN-VALVE EVIDENCE FOR A SHORTSPIN-DIFFUSION LENGTH IN PERMALLOY, Journal of magnetism and magnetic materials, 170(1-2), 1997, pp. 1-6
Citations number
45
Categorie Soggetti
Material Science","Physics, Condensed Matter
Journal title
Journal of magnetism and magnetic materials → ACNP
ISSN journal
03048853
Volume
170
Issue
1-2
Year of publication
1997
Pages
1 - 6
Database
ISI
SICI code
0304-8853(1997)170:1-2<1:PESEFA>2.0.ZU;2-M
Abstract
We present the first measurements of giant magnetoresistance with curr ent perpendicular to the layer planes (CPP-MR) of an exchange-biased s pin-valve (EBSV) - a controllable spin-switch. Interpreted with the th eory of Valet and Fert. data on EBSVs of permalloy (Py) with Cu yield an unexpectedly short spin-diffusion length in Py -l(sf)(Py) = 5.5 +/- 1 nm. Such a short has implications for the interpretation of Johnson 's data on a Py/Au/Py spin-switch.