TY - JOUR
T1 - Towards a unified picture of spin dependent transport in and perpendicular giant magnetoresistance and bulk alloys
AU - Hsu, Shih-Ying
AU - Barthélémy, A.
AU - Holody, P.
AU - Loloee, R.
AU - Schroeder, P. A.
AU - Fert, A.
PY - 1997/3/31
Y1 - 1997/3/31
N2 - From data on Fe1 − x Vx/Cu/Co/Cu)N multilayers, we show that Fe doped with V gains a negative spin asymmetry for bulk scattering (β < 0), which, combined with the positive asymmetry of Co, accounts for the inverse current perpendicular to the plane (CPP) giant magnetoresistance (GMR) we observe. More precisely, the competition between positive and negative asymmetries for interface and bulk scatterings in FeV leads to inverse (normal) GMR for layers thicker (thinner) than a compensation thickness. The negative β of FeV is consistent with theoretical predictions and bulk alloy data. The current in the plane (CIP) GMR is not reversed, which illustrates the role of channeling in CIP.
AB - From data on Fe1 − x Vx/Cu/Co/Cu)N multilayers, we show that Fe doped with V gains a negative spin asymmetry for bulk scattering (β < 0), which, combined with the positive asymmetry of Co, accounts for the inverse current perpendicular to the plane (CPP) giant magnetoresistance (GMR) we observe. More precisely, the competition between positive and negative asymmetries for interface and bulk scatterings in FeV leads to inverse (normal) GMR for layers thicker (thinner) than a compensation thickness. The negative β of FeV is consistent with theoretical predictions and bulk alloy data. The current in the plane (CIP) GMR is not reversed, which illustrates the role of channeling in CIP.
UR - http://www.scopus.com/inward/record.url?scp=3743080911&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.78.2652
DO - 10.1103/PhysRevLett.78.2652
M3 - Article
AN - SCOPUS:3743080911
SN - 0031-9007
VL - 78
SP - 2652
EP - 2655
JO - Physical Review Letters
JF - Physical Review Letters
IS - 13
ER -