TY - JOUR
T1 - Spin-diffusion lengths o using current perpendicular to plane magnetoresistance measurements of magnetic multilayers
AU - Hsu, Shih-ying
AU - Holody, P.
AU - Loloee, R.
AU - Rittner, J.
AU - Pratt, W.
AU - Schroeder, P.
PY - 1996
Y1 - 1996
N2 - Spin-relaxation effects are generally believed to have a strong influence on giant magnetoresistance of ferromagnetic/noble-metal multilayers. We have measured current perpendicular to plane magnetoresistances (CPP MR’s) of sputtered Co/(Formula presented)(Formula presented) multilayers with x=0.06, 0.10, 0.14, and 0.23. Our results indicate that the spin-diffusion length of CuNi is reduced as the concentration of Ni increases. Spin-diffusion lengths obtained from fitting the CPP MR to Valet-Fert theory are in a good agreement with theoretical calculations from spin-orbit scattering. Assuming that the permalloy(Py)-Cu interface in Py/Cu multilayers resembles a CuNi alloy, we can conclude that there will be spin-flip scattering at a Py-Cu interface, but we expect its effect on the MR to be small.
AB - Spin-relaxation effects are generally believed to have a strong influence on giant magnetoresistance of ferromagnetic/noble-metal multilayers. We have measured current perpendicular to plane magnetoresistances (CPP MR’s) of sputtered Co/(Formula presented)(Formula presented) multilayers with x=0.06, 0.10, 0.14, and 0.23. Our results indicate that the spin-diffusion length of CuNi is reduced as the concentration of Ni increases. Spin-diffusion lengths obtained from fitting the CPP MR to Valet-Fert theory are in a good agreement with theoretical calculations from spin-orbit scattering. Assuming that the permalloy(Py)-Cu interface in Py/Cu multilayers resembles a CuNi alloy, we can conclude that there will be spin-flip scattering at a Py-Cu interface, but we expect its effect on the MR to be small.
UR - http://www.scopus.com/inward/record.url?scp=0000624190&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.54.9027
DO - 10.1103/PhysRevB.54.9027
M3 - Article
AN - SCOPUS:0000624190
SN - 1098-0121
VL - 54
SP - 9027
EP - 9030
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 13
ER -